Home / 8,721.31-12,034.96-4,742.28

Finding the Fourth Proportional to 8,721.31, 12,034.96 and 4,742.28

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Solution

The fourth proportional to 8,721.31, 12,034.96 and 4,742.28 is: 6,544.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,721.31 : 12,034.96 = 4,742.28 : x
  2. Step 2: Convert to fraction form
    8,721.31/12,034.96 = 4,742.28/x
  3. Step 3: Cross multiply
    8,721.31x = 12,034.96 × 4,742.28
  4. Step 4: Simplify right side
    8,721.31x = 57,073,150.11
  5. Step 5: Solve for x
    x = 57,073,150.11/8,721.31
  6. Step 6: Final answer
    x = 6,544.10

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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.