Home / 2,265.32-3,125.20-1,380.80

Finding the Fourth Proportional to 2,265.32, 3,125.20 and 1,380.80

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Solution

The fourth proportional to 2,265.32, 3,125.20 and 1,380.80 is: 1,904.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,265.32 : 3,125.20 = 1,380.80 : x
  2. Step 2: Convert to fraction form
    2,265.32/3,125.20 = 1,380.80/x
  3. Step 3: Cross multiply
    2,265.32x = 3,125.20 × 1,380.80
  4. Step 4: Simplify right side
    2,265.32x = 4,315,276.16
  5. Step 5: Solve for x
    x = 4,315,276.16/2,265.32
  6. Step 6: Final answer
    x = 1,904.93

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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.