Home / 3,147.84-4,344.12-1,731.47

Finding the Fourth Proportional to 3,147.84, 4,344.12 and 1,731.47

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Solution

The fourth proportional to 3,147.84, 4,344.12 and 1,731.47 is: 2,389.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,147.84 : 4,344.12 = 1,731.47 : x
  2. Step 2: Convert to fraction form
    3,147.84/4,344.12 = 1,731.47/x
  3. Step 3: Cross multiply
    3,147.84x = 4,344.12 × 1,731.47
  4. Step 4: Simplify right side
    3,147.84x = 7,521,691.74
  5. Step 5: Solve for x
    x = 7,521,691.74/3,147.84
  6. Step 6: Final answer
    x = 2,389.48

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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.