Home / 9,613.28-14,420.70-2,687.78

Finding the Fourth Proportional to 9,613.28, 14,420.70 and 2,687.78

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Solution

The fourth proportional to 9,613.28, 14,420.70 and 2,687.78 is: 4,031.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,613.28 : 14,420.70 = 2,687.78 : x
  2. Step 2: Convert to fraction form
    9,613.28/14,420.70 = 2,687.78/x
  3. Step 3: Cross multiply
    9,613.28x = 14,420.70 × 2,687.78
  4. Step 4: Simplify right side
    9,613.28x = 38,759,669.05
  5. Step 5: Solve for x
    x = 38,759,669.05/9,613.28
  6. Step 6: Final answer
    x = 4,031.89

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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.