Home / 9,287.85-12,818.13-5,308.20

Finding the Fourth Proportional to 9,287.85, 12,818.13 and 5,308.20

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Solution

The fourth proportional to 9,287.85, 12,818.13 and 5,308.20 is: 7,325.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,287.85 : 12,818.13 = 5,308.20 : x
  2. Step 2: Convert to fraction form
    9,287.85/12,818.13 = 5,308.20/x
  3. Step 3: Cross multiply
    9,287.85x = 12,818.13 × 5,308.20
  4. Step 4: Simplify right side
    9,287.85x = 68,041,197.67
  5. Step 5: Solve for x
    x = 68,041,197.67/9,287.85
  6. Step 6: Final answer
    x = 7,325.83

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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.