Home / 6,422.40-9,622.08-5,603.20

Finding the Fourth Proportional to 6,422.40, 9,622.08 and 5,603.20

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Solution

The fourth proportional to 6,422.40, 9,622.08 and 5,603.20 is: 8,394.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,422.40 : 9,622.08 = 5,603.20 : x
  2. Step 2: Convert to fraction form
    6,422.40/9,622.08 = 5,603.20/x
  3. Step 3: Cross multiply
    6,422.40x = 9,622.08 × 5,603.20
  4. Step 4: Simplify right side
    6,422.40x = 53,914,438.66
  5. Step 5: Solve for x
    x = 53,914,438.66/6,422.40
  6. Step 6: Final answer
    x = 8,394.75

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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.