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Finding the Fourth Proportional to 2,921.27, 4,381.90 and 973.49

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Solution

The fourth proportional to 2,921.27, 4,381.90 and 973.49 is: 1,460.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,921.27 : 4,381.90 = 973.49 : x
  2. Step 2: Convert to fraction form
    2,921.27/4,381.90 = 973.49/x
  3. Step 3: Cross multiply
    2,921.27x = 4,381.90 × 973.49
  4. Step 4: Simplify right side
    2,921.27x = 4,265,711.49
  5. Step 5: Solve for x
    x = 4,265,711.49/2,921.27
  6. Step 6: Final answer
    x = 1,460.23

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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.