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Finding the Fourth Proportional to 2,560.12, 3,839.04 and 916.24

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Solution

The fourth proportional to 2,560.12, 3,839.04 and 916.24 is: 1,373.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,560.12 : 3,839.04 = 916.24 : x
  2. Step 2: Convert to fraction form
    2,560.12/3,839.04 = 916.24/x
  3. Step 3: Cross multiply
    2,560.12x = 3,839.04 × 916.24
  4. Step 4: Simplify right side
    2,560.12x = 3,517,482.01
  5. Step 5: Solve for x
    x = 3,517,482.01/2,560.12
  6. Step 6: Final answer
    x = 1,373.95

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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.