Home / 7,869.95-11,805.23-2,939.07

Finding the Fourth Proportional to 7,869.95, 11,805.23 and 2,939.07

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Solution

The fourth proportional to 7,869.95, 11,805.23 and 2,939.07 is: 4,408.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,869.95 : 11,805.23 = 2,939.07 : x
  2. Step 2: Convert to fraction form
    7,869.95/11,805.23 = 2,939.07/x
  3. Step 3: Cross multiply
    7,869.95x = 11,805.23 × 2,939.07
  4. Step 4: Simplify right side
    7,869.95x = 34,696,397.34
  5. Step 5: Solve for x
    x = 34,696,397.34/7,869.95
  6. Step 6: Final answer
    x = 4,408.72

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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.