Home / 1,439.17-2,158.30-954.79

Finding the Fourth Proportional to 1,439.17, 2,158.30 and 954.79

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Solution

The fourth proportional to 1,439.17, 2,158.30 and 954.79 is: 1,431.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,439.17 : 2,158.30 = 954.79 : x
  2. Step 2: Convert to fraction form
    1,439.17/2,158.30 = 954.79/x
  3. Step 3: Cross multiply
    1,439.17x = 2,158.30 × 954.79
  4. Step 4: Simplify right side
    1,439.17x = 2,060,723.26
  5. Step 5: Solve for x
    x = 2,060,723.26/1,439.17
  6. Step 6: Final answer
    x = 1,431.88

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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.