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Finding the Fourth Proportional to 2,574.99, 3,862.49 and 843.75

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Solution

The fourth proportional to 2,574.99, 3,862.49 and 843.75 is: 1,265.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,574.99 : 3,862.49 = 843.75 : x
  2. Step 2: Convert to fraction form
    2,574.99/3,862.49 = 843.75/x
  3. Step 3: Cross multiply
    2,574.99x = 3,862.49 × 843.75
  4. Step 4: Simplify right side
    2,574.99x = 3,258,971.72
  5. Step 5: Solve for x
    x = 3,258,971.72/2,574.99
  6. Step 6: Final answer
    x = 1,265.63

Related Problems

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.