Home / 7,524.90-11,287.28-1,978.16

Finding the Fourth Proportional to 7,524.90, 11,287.28 and 1,978.16

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Solution

The fourth proportional to 7,524.90, 11,287.28 and 1,978.16 is: 2,967.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,524.90 : 11,287.28 = 1,978.16 : x
  2. Step 2: Convert to fraction form
    7,524.90/11,287.28 = 1,978.16/x
  3. Step 3: Cross multiply
    7,524.90x = 11,287.28 × 1,978.16
  4. Step 4: Simplify right side
    7,524.90x = 22,327,979.48
  5. Step 5: Solve for x
    x = 22,327,979.48/7,524.90
  6. Step 6: Final answer
    x = 2,967.21

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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.