Home / 3,190.10-4,785.15-998.85

Finding the Fourth Proportional to 3,190.10, 4,785.15 and 998.85

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Solution

The fourth proportional to 3,190.10, 4,785.15 and 998.85 is: 1,498.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,190.10 : 4,785.15 = 998.85 : x
  2. Step 2: Convert to fraction form
    3,190.10/4,785.15 = 998.85/x
  3. Step 3: Cross multiply
    3,190.10x = 4,785.15 × 998.85
  4. Step 4: Simplify right side
    3,190.10x = 4,779,647.08
  5. Step 5: Solve for x
    x = 4,779,647.08/3,190.10
  6. Step 6: Final answer
    x = 1,498.28

Related Problems

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Half scale
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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.