Home / 7,278.16-10,909.40-3,522.01

Finding the Fourth Proportional to 7,278.16, 10,909.40 and 3,522.01

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Solution

The fourth proportional to 7,278.16, 10,909.40 and 3,522.01 is: 5,279.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,278.16 : 10,909.40 = 3,522.01 : x
  2. Step 2: Convert to fraction form
    7,278.16/10,909.40 = 3,522.01/x
  3. Step 3: Cross multiply
    7,278.16x = 10,909.40 × 3,522.01
  4. Step 4: Simplify right side
    7,278.16x = 38,422,979.82
  5. Step 5: Solve for x
    x = 38,422,979.82/7,278.16
  6. Step 6: Final answer
    x = 5,279.21

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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.