Home / 8,565.20-11,811.46-6,445.80

Finding the Fourth Proportional to 8,565.20, 11,811.46 and 6,445.80

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Solution

The fourth proportional to 8,565.20, 11,811.46 and 6,445.80 is: 8,888.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,565.20 : 11,811.46 = 6,445.80 : x
  2. Step 2: Convert to fraction form
    8,565.20/11,811.46 = 6,445.80/x
  3. Step 3: Cross multiply
    8,565.20x = 11,811.46 × 6,445.80
  4. Step 4: Simplify right side
    8,565.20x = 76,134,272.30
  5. Step 5: Solve for x
    x = 76,134,272.30/8,565.20
  6. Step 6: Final answer
    x = 8,888.79

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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.