Home / 9,979.84-13,770.08-5,732.20

Finding the Fourth Proportional to 9,979.84, 13,770.08 and 5,732.20

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Solution

The fourth proportional to 9,979.84, 13,770.08 and 5,732.20 is: 7,909.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,979.84 : 13,770.08 = 5,732.20 : x
  2. Step 2: Convert to fraction form
    9,979.84/13,770.08 = 5,732.20/x
  3. Step 3: Cross multiply
    9,979.84x = 13,770.08 × 5,732.20
  4. Step 4: Simplify right side
    9,979.84x = 78,932,852.58
  5. Step 5: Solve for x
    x = 78,932,852.58/9,979.84
  6. Step 6: Final answer
    x = 7,909.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.