Home / 5,451.26-8,178.10-1,988.50

Finding the Fourth Proportional to 5,451.26, 8,178.10 and 1,988.50

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Solution

The fourth proportional to 5,451.26, 8,178.10 and 1,988.50 is: 2,983.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,451.26 : 8,178.10 = 1,988.50 : x
  2. Step 2: Convert to fraction form
    5,451.26/8,178.10 = 1,988.50/x
  3. Step 3: Cross multiply
    5,451.26x = 8,178.10 × 1,988.50
  4. Step 4: Simplify right side
    5,451.26x = 16,262,151.85
  5. Step 5: Solve for x
    x = 16,262,151.85/5,451.26
  6. Step 6: Final answer
    x = 2,983.19

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Double scale
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Similar ratio
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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.