Home / 8,281.91-11,428.88-4,505.15

Finding the Fourth Proportional to 8,281.91, 11,428.88 and 4,505.15

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Solution

The fourth proportional to 8,281.91, 11,428.88 and 4,505.15 is: 6,217.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,281.91 : 11,428.88 = 4,505.15 : x
  2. Step 2: Convert to fraction form
    8,281.91/11,428.88 = 4,505.15/x
  3. Step 3: Cross multiply
    8,281.91x = 11,428.88 × 4,505.15
  4. Step 4: Simplify right side
    8,281.91x = 51,488,739.06
  5. Step 5: Solve for x
    x = 51,488,739.06/8,281.91
  6. Step 6: Final answer
    x = 6,217.02

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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.