Home / 8,318.10-11,479.41-4,781.64

Finding the Fourth Proportional to 8,318.10, 11,479.41 and 4,781.64

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Solution

The fourth proportional to 8,318.10, 11,479.41 and 4,781.64 is: 6,598.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,318.10 : 11,479.41 = 4,781.64 : x
  2. Step 2: Convert to fraction form
    8,318.10/11,479.41 = 4,781.64/x
  3. Step 3: Cross multiply
    8,318.10x = 11,479.41 × 4,781.64
  4. Step 4: Simplify right side
    8,318.10x = 54,890,406.03
  5. Step 5: Solve for x
    x = 54,890,406.03/8,318.10
  6. Step 6: Final answer
    x = 6,598.91

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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.