Home / 9,078.92-12,528.90-5,304.68

Finding the Fourth Proportional to 9,078.92, 12,528.90 and 5,304.68

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Solution

The fourth proportional to 9,078.92, 12,528.90 and 5,304.68 is: 7,320.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,078.92 : 12,528.90 = 5,304.68 : x
  2. Step 2: Convert to fraction form
    9,078.92/12,528.90 = 5,304.68/x
  3. Step 3: Cross multiply
    9,078.92x = 12,528.90 × 5,304.68
  4. Step 4: Simplify right side
    9,078.92x = 66,461,805.25
  5. Step 5: Solve for x
    x = 66,461,805.25/9,078.92
  6. Step 6: Final answer
    x = 7,320.45

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Half scale
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Similar ratio
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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.