Home / 5,272.23-7,909.71-1,986.30

Finding the Fourth Proportional to 5,272.23, 7,909.71 and 1,986.30

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Solution

The fourth proportional to 5,272.23, 7,909.71 and 1,986.30 is: 2,979.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,272.23 : 7,909.71 = 1,986.30 : x
  2. Step 2: Convert to fraction form
    5,272.23/7,909.71 = 1,986.30/x
  3. Step 3: Cross multiply
    5,272.23x = 7,909.71 × 1,986.30
  4. Step 4: Simplify right side
    5,272.23x = 15,711,056.97
  5. Step 5: Solve for x
    x = 15,711,056.97/5,272.23
  6. Step 6: Final answer
    x = 2,979.96

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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.