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Finding the Fourth Proportional to 10,531.04, 15,804.72 and 3,963.20

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Solution

The fourth proportional to 10,531.04, 15,804.72 and 3,963.20 is: 5,947.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,531.04 : 15,804.72 = 3,963.20 : x
  2. Step 2: Convert to fraction form
    10,531.04/15,804.72 = 3,963.20/x
  3. Step 3: Cross multiply
    10,531.04x = 15,804.72 × 3,963.20
  4. Step 4: Simplify right side
    10,531.04x = 62,637,266.30
  5. Step 5: Solve for x
    x = 62,637,266.30/10,531.04
  6. Step 6: Final answer
    x = 5,947.87

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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.