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Finding the Fourth Proportional to 3,143.30, 4,715.40 and 952.20

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Solution

The fourth proportional to 3,143.30, 4,715.40 and 952.20 is: 1,428.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,143.30 : 4,715.40 = 952.20 : x
  2. Step 2: Convert to fraction form
    3,143.30/4,715.40 = 952.20/x
  3. Step 3: Cross multiply
    3,143.30x = 4,715.40 × 952.20
  4. Step 4: Simplify right side
    3,143.30x = 4,490,003.88
  5. Step 5: Solve for x
    x = 4,490,003.88/3,143.30
  6. Step 6: Final answer
    x = 1,428.44

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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.