Home / 7,966.19-11,947.80-2,123.30

Finding the Fourth Proportional to 7,966.19, 11,947.80 and 2,123.30

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Solution

The fourth proportional to 7,966.19, 11,947.80 and 2,123.30 is: 3,184.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,966.19 : 11,947.80 = 2,123.30 : x
  2. Step 2: Convert to fraction form
    7,966.19/11,947.80 = 2,123.30/x
  3. Step 3: Cross multiply
    7,966.19x = 11,947.80 × 2,123.30
  4. Step 4: Simplify right side
    7,966.19x = 25,368,763.74
  5. Step 5: Solve for x
    x = 25,368,763.74/7,966.19
  6. Step 6: Final answer
    x = 3,184.55

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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.