Home / 8,979.64-12,391.71-5,000.51

Finding the Fourth Proportional to 8,979.64, 12,391.71 and 5,000.51

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Solution

The fourth proportional to 8,979.64, 12,391.71 and 5,000.51 is: 6,900.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,979.64 : 12,391.71 = 5,000.51 : x
  2. Step 2: Convert to fraction form
    8,979.64/12,391.71 = 5,000.51/x
  3. Step 3: Cross multiply
    8,979.64x = 12,391.71 × 5,000.51
  4. Step 4: Simplify right side
    8,979.64x = 61,964,869.77
  5. Step 5: Solve for x
    x = 61,964,869.77/8,979.64
  6. Step 6: Final answer
    x = 6,900.60

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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.