Home / 3,760.30-5,641.35-1,128.03

Finding the Fourth Proportional to 3,760.30, 5,641.35 and 1,128.03

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Solution

The fourth proportional to 3,760.30, 5,641.35 and 1,128.03 is: 1,692.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,760.30 : 5,641.35 = 1,128.03 : x
  2. Step 2: Convert to fraction form
    3,760.30/5,641.35 = 1,128.03/x
  3. Step 3: Cross multiply
    3,760.30x = 5,641.35 × 1,128.03
  4. Step 4: Simplify right side
    3,760.30x = 6,363,612.04
  5. Step 5: Solve for x
    x = 6,363,612.04/3,760.30
  6. Step 6: Final answer
    x = 1,692.31

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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.