Home / 8,920.07-13,376.65-2,678.61

Finding the Fourth Proportional to 8,920.07, 13,376.65 and 2,678.61

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Solution

The fourth proportional to 8,920.07, 13,376.65 and 2,678.61 is: 4,016.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,920.07 : 13,376.65 = 2,678.61 : x
  2. Step 2: Convert to fraction form
    8,920.07/13,376.65 = 2,678.61/x
  3. Step 3: Cross multiply
    8,920.07x = 13,376.65 × 2,678.61
  4. Step 4: Simplify right side
    8,920.07x = 35,830,828.46
  5. Step 5: Solve for x
    x = 35,830,828.46/8,920.07
  6. Step 6: Final answer
    x = 4,016.88

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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.