Home / 9,781.31-14,671.97-2,855.81

Finding the Fourth Proportional to 9,781.31, 14,671.97 and 2,855.81

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Solution

The fourth proportional to 9,781.31, 14,671.97 and 2,855.81 is: 4,283.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,781.31 : 14,671.97 = 2,855.81 : x
  2. Step 2: Convert to fraction form
    9,781.31/14,671.97 = 2,855.81/x
  3. Step 3: Cross multiply
    9,781.31x = 14,671.97 × 2,855.81
  4. Step 4: Simplify right side
    9,781.31x = 41,900,391.76
  5. Step 5: Solve for x
    x = 41,900,391.76/9,781.31
  6. Step 6: Final answer
    x = 4,283.72

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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.