Home / 4,287.44-6,432.12-1,979.12

Finding the Fourth Proportional to 4,287.44, 6,432.12 and 1,979.12

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Solution

The fourth proportional to 4,287.44, 6,432.12 and 1,979.12 is: 2,969.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,287.44 : 6,432.12 = 1,979.12 : x
  2. Step 2: Convert to fraction form
    4,287.44/6,432.12 = 1,979.12/x
  3. Step 3: Cross multiply
    4,287.44x = 6,432.12 × 1,979.12
  4. Step 4: Simplify right side
    4,287.44x = 12,729,937.33
  5. Step 5: Solve for x
    x = 12,729,937.33/4,287.44
  6. Step 6: Final answer
    x = 2,969.12

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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.