Home / 7,870.27-11,809.97-2,939.73

Finding the Fourth Proportional to 7,870.27, 11,809.97 and 2,939.73

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Solution

The fourth proportional to 7,870.27, 11,809.97 and 2,939.73 is: 4,411.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,870.27 : 11,809.97 = 2,939.73 : x
  2. Step 2: Convert to fraction form
    7,870.27/11,809.97 = 2,939.73/x
  3. Step 3: Cross multiply
    7,870.27x = 11,809.97 × 2,939.73
  4. Step 4: Simplify right side
    7,870.27x = 34,718,123.11
  5. Step 5: Solve for x
    x = 34,718,123.11/7,870.27
  6. Step 6: Final answer
    x = 4,411.30

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1.5x scale

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.