Home / 5,519.60-8,279.40-4,207.40

Finding the Fourth Proportional to 5,519.60, 8,279.40 and 4,207.40

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Solution

The fourth proportional to 5,519.60, 8,279.40 and 4,207.40 is: 6,311.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,519.60 : 8,279.40 = 4,207.40 : x
  2. Step 2: Convert to fraction form
    5,519.60/8,279.40 = 4,207.40/x
  3. Step 3: Cross multiply
    5,519.60x = 8,279.40 × 4,207.40
  4. Step 4: Simplify right side
    5,519.60x = 34,834,747.56
  5. Step 5: Solve for x
    x = 34,834,747.56/5,519.60
  6. Step 6: Final answer
    x = 6,311.10

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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.