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Finding the Fourth Proportional to 7,681.85, 10,600.28 and 4,278.61

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Solution

The fourth proportional to 7,681.85, 10,600.28 and 4,278.61 is: 5,904.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,681.85 : 10,600.28 = 4,278.61 : x
  2. Step 2: Convert to fraction form
    7,681.85/10,600.28 = 4,278.61/x
  3. Step 3: Cross multiply
    7,681.85x = 10,600.28 × 4,278.61
  4. Step 4: Simplify right side
    7,681.85x = 45,354,412.29
  5. Step 5: Solve for x
    x = 45,354,412.29/7,681.85
  6. Step 6: Final answer
    x = 5,904.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.