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Finding the Fourth Proportional to 6,139.64, 9,208.52 and 1,979.08

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Solution

The fourth proportional to 6,139.64, 9,208.52 and 1,979.08 is: 2,968.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,139.64 : 9,208.52 = 1,979.08 : x
  2. Step 2: Convert to fraction form
    6,139.64/9,208.52 = 1,979.08/x
  3. Step 3: Cross multiply
    6,139.64x = 9,208.52 × 1,979.08
  4. Step 4: Simplify right side
    6,139.64x = 18,224,397.76
  5. Step 5: Solve for x
    x = 18,224,397.76/6,139.64
  6. Step 6: Final answer
    x = 2,968.32

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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.