Home / 8,721.30-12,034.88-4,742.38

Finding the Fourth Proportional to 8,721.30, 12,034.88 and 4,742.38

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Solution

The fourth proportional to 8,721.30, 12,034.88 and 4,742.38 is: 6,544.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,721.30 : 12,034.88 = 4,742.38 : x
  2. Step 2: Convert to fraction form
    8,721.30/12,034.88 = 4,742.38/x
  3. Step 3: Cross multiply
    8,721.30x = 12,034.88 × 4,742.38
  4. Step 4: Simplify right side
    8,721.30x = 57,073,974.21
  5. Step 5: Solve for x
    x = 57,073,974.21/8,721.30
  6. Step 6: Final answer
    x = 6,544.20

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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.