Home / 8,681.28-11,979.36-4,956

Finding the Fourth Proportional to 8,681.28, 11,979.36 and 4,956

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Solution

The fourth proportional to 8,681.28, 11,979.36 and 4,956 is: 6,838.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,681.28 : 11,979.36 = 4,956 : x
  2. Step 2: Convert to fraction form
    8,681.28/11,979.36 = 4,956/x
  3. Step 3: Cross multiply
    8,681.28x = 11,979.36 × 4,956
  4. Step 4: Simplify right side
    8,681.28x = 59,369,708.16
  5. Step 5: Solve for x
    x = 59,369,708.16/8,681.28
  6. Step 6: Final answer
    x = 6,838.82

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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.