Home / 1,549.17-2,139.35-959.90

Finding the Fourth Proportional to 1,549.17, 2,139.35 and 959.90

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Solution

The fourth proportional to 1,549.17, 2,139.35 and 959.90 is: 1,325.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,549.17 : 2,139.35 = 959.90 : x
  2. Step 2: Convert to fraction form
    1,549.17/2,139.35 = 959.90/x
  3. Step 3: Cross multiply
    1,549.17x = 2,139.35 × 959.90
  4. Step 4: Simplify right side
    1,549.17x = 2,053,546.57
  5. Step 5: Solve for x
    x = 2,053,546.57/1,549.17
  6. Step 6: Final answer
    x = 1,325.58

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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.