Home / 2,265.39-3,125.61-1,380.87

Finding the Fourth Proportional to 2,265.39, 3,125.61 and 1,380.87

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Solution

The fourth proportional to 2,265.39, 3,125.61 and 1,380.87 is: 1,905.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,265.39 : 3,125.61 = 1,380.87 : x
  2. Step 2: Convert to fraction form
    2,265.39/3,125.61 = 1,380.87/x
  3. Step 3: Cross multiply
    2,265.39x = 3,125.61 × 1,380.87
  4. Step 4: Simplify right side
    2,265.39x = 4,316,061.08
  5. Step 5: Solve for x
    x = 4,316,061.08/2,265.39
  6. Step 6: Final answer
    x = 1,905.22

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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.