Home / 2,545.12-3,817.72-985.84

Finding the Fourth Proportional to 2,545.12, 3,817.72 and 985.84

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Solution

The fourth proportional to 2,545.12, 3,817.72 and 985.84 is: 1,478.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,545.12 : 3,817.72 = 985.84 : x
  2. Step 2: Convert to fraction form
    2,545.12/3,817.72 = 985.84/x
  3. Step 3: Cross multiply
    2,545.12x = 3,817.72 × 985.84
  4. Step 4: Simplify right side
    2,545.12x = 3,763,661.08
  5. Step 5: Solve for x
    x = 3,763,661.08/2,545.12
  6. Step 6: Final answer
    x = 1,478.78

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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.