Home / 9,678.52-13,356.66-5,487.40

Finding the Fourth Proportional to 9,678.52, 13,356.66 and 5,487.40

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Solution

The fourth proportional to 9,678.52, 13,356.66 and 5,487.40 is: 7,572.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,678.52 : 13,356.66 = 5,487.40 : x
  2. Step 2: Convert to fraction form
    9,678.52/13,356.66 = 5,487.40/x
  3. Step 3: Cross multiply
    9,678.52x = 13,356.66 × 5,487.40
  4. Step 4: Simplify right side
    9,678.52x = 73,293,336.08
  5. Step 5: Solve for x
    x = 73,293,336.08/9,678.52
  6. Step 6: Final answer
    x = 7,572.78

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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.