Home / 7,781.14-11,671.69-1,937.76

Finding the Fourth Proportional to 7,781.14, 11,671.69 and 1,937.76

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Solution

The fourth proportional to 7,781.14, 11,671.69 and 1,937.76 is: 2,906.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,781.14 : 11,671.69 = 1,937.76 : x
  2. Step 2: Convert to fraction form
    7,781.14/11,671.69 = 1,937.76/x
  3. Step 3: Cross multiply
    7,781.14x = 11,671.69 × 1,937.76
  4. Step 4: Simplify right side
    7,781.14x = 22,616,934.01
  5. Step 5: Solve for x
    x = 22,616,934.01/7,781.14
  6. Step 6: Final answer
    x = 2,906.64

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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.