Home / 1,366.10-2,049.15-928.70

Finding the Fourth Proportional to 1,366.10, 2,049.15 and 928.70

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Solution

The fourth proportional to 1,366.10, 2,049.15 and 928.70 is: 1,393.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,366.10 : 2,049.15 = 928.70 : x
  2. Step 2: Convert to fraction form
    1,366.10/2,049.15 = 928.70/x
  3. Step 3: Cross multiply
    1,366.10x = 2,049.15 × 928.70
  4. Step 4: Simplify right side
    1,366.10x = 1,903,045.61
  5. Step 5: Solve for x
    x = 1,903,045.61/1,366.10
  6. Step 6: Final answer
    x = 1,393.05

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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.