Home / 3,126.45-4,690.29-935.13

Finding the Fourth Proportional to 3,126.45, 4,690.29 and 935.13

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Solution

The fourth proportional to 3,126.45, 4,690.29 and 935.13 is: 1,402.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,126.45 : 4,690.29 = 935.13 : x
  2. Step 2: Convert to fraction form
    3,126.45/4,690.29 = 935.13/x
  3. Step 3: Cross multiply
    3,126.45x = 4,690.29 × 935.13
  4. Step 4: Simplify right side
    3,126.45x = 4,386,026.21
  5. Step 5: Solve for x
    x = 4,386,026.21/3,126.45
  6. Step 6: Final answer
    x = 1,402.88

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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.