Home / 9,979.13-13,770.50-5,502.79

Finding the Fourth Proportional to 9,979.13, 13,770.50 and 5,502.79

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Solution

The fourth proportional to 9,979.13, 13,770.50 and 5,502.79 is: 7,593.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,979.13 : 13,770.50 = 5,502.79 : x
  2. Step 2: Convert to fraction form
    9,979.13/13,770.50 = 5,502.79/x
  3. Step 3: Cross multiply
    9,979.13x = 13,770.50 × 5,502.79
  4. Step 4: Simplify right side
    9,979.13x = 75,776,097.41
  5. Step 5: Solve for x
    x = 75,776,097.41/9,979.13
  6. Step 6: Final answer
    x = 7,593.46

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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.