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Finding the Fourth Proportional to 4,294.40, 6,422.40 and 3,603.20

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Solution

The fourth proportional to 4,294.40, 6,422.40 and 3,603.20 is: 5,388.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,294.40 : 6,422.40 = 3,603.20 : x
  2. Step 2: Convert to fraction form
    4,294.40/6,422.40 = 3,603.20/x
  3. Step 3: Cross multiply
    4,294.40x = 6,422.40 × 3,603.20
  4. Step 4: Simplify right side
    4,294.40x = 23,141,191.68
  5. Step 5: Solve for x
    x = 23,141,191.68/4,294.40
  6. Step 6: Final answer
    x = 5,388.69

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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.