Home / 5,638.30-7,781.28-3,280.26

Finding the Fourth Proportional to 5,638.30, 7,781.28 and 3,280.26

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Solution

The fourth proportional to 5,638.30, 7,781.28 and 3,280.26 is: 4,527.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,638.30 : 7,781.28 = 3,280.26 : x
  2. Step 2: Convert to fraction form
    5,638.30/7,781.28 = 3,280.26/x
  3. Step 3: Cross multiply
    5,638.30x = 7,781.28 × 3,280.26
  4. Step 4: Simplify right side
    5,638.30x = 25,524,621.53
  5. Step 5: Solve for x
    x = 25,524,621.53/5,638.30
  6. Step 6: Final answer
    x = 4,527.01

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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.