Home / 7,515.20-11,279.60-4,008.18

Finding the Fourth Proportional to 7,515.20, 11,279.60 and 4,008.18

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Solution

The fourth proportional to 7,515.20, 11,279.60 and 4,008.18 is: 6,015.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,515.20 : 11,279.60 = 4,008.18 : x
  2. Step 2: Convert to fraction form
    7,515.20/11,279.60 = 4,008.18/x
  3. Step 3: Cross multiply
    7,515.20x = 11,279.60 × 4,008.18
  4. Step 4: Simplify right side
    7,515.20x = 45,210,667.13
  5. Step 5: Solve for x
    x = 45,210,667.13/7,515.20
  6. Step 6: Final answer
    x = 6,015.90

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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.