Home / 5,515.65-8,279.40-2,230.90

Finding the Fourth Proportional to 5,515.65, 8,279.40 and 2,230.90

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Solution

The fourth proportional to 5,515.65, 8,279.40 and 2,230.90 is: 3,348.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,515.65 : 8,279.40 = 2,230.90 : x
  2. Step 2: Convert to fraction form
    5,515.65/8,279.40 = 2,230.90/x
  3. Step 3: Cross multiply
    5,515.65x = 8,279.40 × 2,230.90
  4. Step 4: Simplify right side
    5,515.65x = 18,470,513.46
  5. Step 5: Solve for x
    x = 18,470,513.46/5,515.65
  6. Step 6: Final answer
    x = 3,348.75

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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.