Home / 5,638.38-7,782.40-3,753.12

Finding the Fourth Proportional to 5,638.38, 7,782.40 and 3,753.12

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Solution

The fourth proportional to 5,638.38, 7,782.40 and 3,753.12 is: 5,180.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,638.38 : 7,782.40 = 3,753.12 : x
  2. Step 2: Convert to fraction form
    5,638.38/7,782.40 = 3,753.12/x
  3. Step 3: Cross multiply
    5,638.38x = 7,782.40 × 3,753.12
  4. Step 4: Simplify right side
    5,638.38x = 29,208,281.09
  5. Step 5: Solve for x
    x = 29,208,281.09/5,638.38
  6. Step 6: Final answer
    x = 5,180.26

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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.