Home / 8,319.24-11,479.28-4,781.80

Finding the Fourth Proportional to 8,319.24, 11,479.28 and 4,781.80

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Solution

The fourth proportional to 8,319.24, 11,479.28 and 4,781.80 is: 6,598.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,319.24 : 11,479.28 = 4,781.80 : x
  2. Step 2: Convert to fraction form
    8,319.24/11,479.28 = 4,781.80/x
  3. Step 3: Cross multiply
    8,319.24x = 11,479.28 × 4,781.80
  4. Step 4: Simplify right side
    8,319.24x = 54,891,621.10
  5. Step 5: Solve for x
    x = 54,891,621.10/8,319.24
  6. Step 6: Final answer
    x = 6,598.15

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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.