Home / 8,590.08-12,885.12-7,288.32

Finding the Fourth Proportional to 8,590.08, 12,885.12 and 7,288.32

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Solution

The fourth proportional to 8,590.08, 12,885.12 and 7,288.32 is: 10,932.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,590.08 : 12,885.12 = 7,288.32 : x
  2. Step 2: Convert to fraction form
    8,590.08/12,885.12 = 7,288.32/x
  3. Step 3: Cross multiply
    8,590.08x = 12,885.12 × 7,288.32
  4. Step 4: Simplify right side
    8,590.08x = 93,910,877.80
  5. Step 5: Solve for x
    x = 93,910,877.80/8,590.08
  6. Step 6: Final answer
    x = 10,932.48

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.