Home / 8,917.12-12,311.64-5,565.04

Finding the Fourth Proportional to 8,917.12, 12,311.64 and 5,565.04

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Solution

The fourth proportional to 8,917.12, 12,311.64 and 5,565.04 is: 7,683.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,917.12 : 12,311.64 = 5,565.04 : x
  2. Step 2: Convert to fraction form
    8,917.12/12,311.64 = 5,565.04/x
  3. Step 3: Cross multiply
    8,917.12x = 12,311.64 × 5,565.04
  4. Step 4: Simplify right side
    8,917.12x = 68,514,769.07
  5. Step 5: Solve for x
    x = 68,514,769.07/8,917.12
  6. Step 6: Final answer
    x = 7,683.51

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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.