Home / 6,121.28-8,447.40-3,603.50

Finding the Fourth Proportional to 6,121.28, 8,447.40 and 3,603.50

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Solution

The fourth proportional to 6,121.28, 8,447.40 and 3,603.50 is: 4,972.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,121.28 : 8,447.40 = 3,603.50 : x
  2. Step 2: Convert to fraction form
    6,121.28/8,447.40 = 3,603.50/x
  3. Step 3: Cross multiply
    6,121.28x = 8,447.40 × 3,603.50
  4. Step 4: Simplify right side
    6,121.28x = 30,440,205.90
  5. Step 5: Solve for x
    x = 30,440,205.90/6,121.28
  6. Step 6: Final answer
    x = 4,972.85

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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.