Home / 7,170.28-9,872.10-6,118.12

Finding the Fourth Proportional to 7,170.28, 9,872.10 and 6,118.12

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Solution

The fourth proportional to 7,170.28, 9,872.10 and 6,118.12 is: 8,423.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,170.28 : 9,872.10 = 6,118.12 : x
  2. Step 2: Convert to fraction form
    7,170.28/9,872.10 = 6,118.12/x
  3. Step 3: Cross multiply
    7,170.28x = 9,872.10 × 6,118.12
  4. Step 4: Simplify right side
    7,170.28x = 60,398,692.45
  5. Step 5: Solve for x
    x = 60,398,692.45/7,170.28
  6. Step 6: Final answer
    x = 8,423.48

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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.