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Finding the Fourth Proportional to 7,250.40, 10,876.40 and 2,319.20

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Solution

The fourth proportional to 7,250.40, 10,876.40 and 2,319.20 is: 3,479.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,250.40 : 10,876.40 = 2,319.20 : x
  2. Step 2: Convert to fraction form
    7,250.40/10,876.40 = 2,319.20/x
  3. Step 3: Cross multiply
    7,250.40x = 10,876.40 × 2,319.20
  4. Step 4: Simplify right side
    7,250.40x = 25,224,546.88
  5. Step 5: Solve for x
    x = 25,224,546.88/7,250.40
  6. Step 6: Final answer
    x = 3,479.06

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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.