Home / 3,147.17-4,721.67-1,392.11

Finding the Fourth Proportional to 3,147.17, 4,721.67 and 1,392.11

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Solution

The fourth proportional to 3,147.17, 4,721.67 and 1,392.11 is: 2,088.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,147.17 : 4,721.67 = 1,392.11 : x
  2. Step 2: Convert to fraction form
    3,147.17/4,721.67 = 1,392.11/x
  3. Step 3: Cross multiply
    3,147.17x = 4,721.67 × 1,392.11
  4. Step 4: Simplify right side
    3,147.17x = 6,573,053.45
  5. Step 5: Solve for x
    x = 6,573,053.45/3,147.17
  6. Step 6: Final answer
    x = 2,088.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.