Home / 7,790.52-11,686.14-1,947.18

Finding the Fourth Proportional to 7,790.52, 11,686.14 and 1,947.18

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Solution

The fourth proportional to 7,790.52, 11,686.14 and 1,947.18 is: 2,920.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,790.52 : 11,686.14 = 1,947.18 : x
  2. Step 2: Convert to fraction form
    7,790.52/11,686.14 = 1,947.18/x
  3. Step 3: Cross multiply
    7,790.52x = 11,686.14 × 1,947.18
  4. Step 4: Simplify right side
    7,790.52x = 22,755,018.09
  5. Step 5: Solve for x
    x = 22,755,018.09/7,790.52
  6. Step 6: Final answer
    x = 2,920.86

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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.