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Finding the Fourth Proportional to 7,503.40, 11,279.40 and 5,327.20

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Solution

The fourth proportional to 7,503.40, 11,279.40 and 5,327.20 is: 8,008.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,503.40 : 11,279.40 = 5,327.20 : x
  2. Step 2: Convert to fraction form
    7,503.40/11,279.40 = 5,327.20/x
  3. Step 3: Cross multiply
    7,503.40x = 11,279.40 × 5,327.20
  4. Step 4: Simplify right side
    7,503.40x = 60,087,619.68
  5. Step 5: Solve for x
    x = 60,087,619.68/7,503.40
  6. Step 6: Final answer
    x = 8,008.05

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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.