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Finding the Fourth Proportional to 10,509.32, 15,763.98 and 3,935.40

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Solution

The fourth proportional to 10,509.32, 15,763.98 and 3,935.40 is: 5,903.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,509.32 : 15,763.98 = 3,935.40 : x
  2. Step 2: Convert to fraction form
    10,509.32/15,763.98 = 3,935.40/x
  3. Step 3: Cross multiply
    10,509.32x = 15,763.98 × 3,935.40
  4. Step 4: Simplify right side
    10,509.32x = 62,037,566.89
  5. Step 5: Solve for x
    x = 62,037,566.89/10,509.32
  6. Step 6: Final answer
    x = 5,903.10

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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.