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Finding the Fourth Proportional to 2,471.66, 3,707.85 and 805.25

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Solution

The fourth proportional to 2,471.66, 3,707.85 and 805.25 is: 1,207.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,471.66 : 3,707.85 = 805.25 : x
  2. Step 2: Convert to fraction form
    2,471.66/3,707.85 = 805.25/x
  3. Step 3: Cross multiply
    2,471.66x = 3,707.85 × 805.25
  4. Step 4: Simplify right side
    2,471.66x = 2,985,746.21
  5. Step 5: Solve for x
    x = 2,985,746.21/2,471.66
  6. Step 6: Final answer
    x = 1,207.99

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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.