Home / 8,968.84-12,387.31-5,979.47

Finding the Fourth Proportional to 8,968.84, 12,387.31 and 5,979.47

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Solution

The fourth proportional to 8,968.84, 12,387.31 and 5,979.47 is: 8,258.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,968.84 : 12,387.31 = 5,979.47 : x
  2. Step 2: Convert to fraction form
    8,968.84/12,387.31 = 5,979.47/x
  3. Step 3: Cross multiply
    8,968.84x = 12,387.31 × 5,979.47
  4. Step 4: Simplify right side
    8,968.84x = 74,069,471.64
  5. Step 5: Solve for x
    x = 74,069,471.64/8,968.84
  6. Step 6: Final answer
    x = 8,258.54

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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.