Home / 4,191.12-6,290.28-1,998.72

Finding the Fourth Proportional to 4,191.12, 6,290.28 and 1,998.72

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Solution

The fourth proportional to 4,191.12, 6,290.28 and 1,998.72 is: 2,999.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,191.12 : 6,290.28 = 1,998.72 : x
  2. Step 2: Convert to fraction form
    4,191.12/6,290.28 = 1,998.72/x
  3. Step 3: Cross multiply
    4,191.12x = 6,290.28 × 1,998.72
  4. Step 4: Simplify right side
    4,191.12x = 12,572,508.44
  5. Step 5: Solve for x
    x = 12,572,508.44/4,191.12
  6. Step 6: Final answer
    x = 2,999.80

Related Problems

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Half scale
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Double scale
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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.