Home / 8,729.12-12,046.10-4,750.20

Finding the Fourth Proportional to 8,729.12, 12,046.10 and 4,750.20

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Solution

The fourth proportional to 8,729.12, 12,046.10 and 4,750.20 is: 6,555.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,729.12 : 12,046.10 = 4,750.20 : x
  2. Step 2: Convert to fraction form
    8,729.12/12,046.10 = 4,750.20/x
  3. Step 3: Cross multiply
    8,729.12x = 12,046.10 × 4,750.20
  4. Step 4: Simplify right side
    8,729.12x = 57,221,360.47
  5. Step 5: Solve for x
    x = 57,221,360.47/8,729.12
  6. Step 6: Final answer
    x = 6,555.23

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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.