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Finding the Fourth Proportional to 3,147.17, 4,721.36 and 956.22

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Solution

The fourth proportional to 3,147.17, 4,721.36 and 956.22 is: 1,434.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,147.17 : 4,721.36 = 956.22 : x
  2. Step 2: Convert to fraction form
    3,147.17/4,721.36 = 956.22/x
  3. Step 3: Cross multiply
    3,147.17x = 4,721.36 × 956.22
  4. Step 4: Simplify right side
    3,147.17x = 4,514,636.37
  5. Step 5: Solve for x
    x = 4,514,636.37/3,147.17
  6. Step 6: Final answer
    x = 1,434.51

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1.5x scale

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.