Home / 3,881.60-5,357.76-2,391.65

Finding the Fourth Proportional to 3,881.60, 5,357.76 and 2,391.65

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Solution

The fourth proportional to 3,881.60, 5,357.76 and 2,391.65 is: 3,301.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,881.60 : 5,357.76 = 2,391.65 : x
  2. Step 2: Convert to fraction form
    3,881.60/5,357.76 = 2,391.65/x
  3. Step 3: Cross multiply
    3,881.60x = 5,357.76 × 2,391.65
  4. Step 4: Simplify right side
    3,881.60x = 12,813,886.70
  5. Step 5: Solve for x
    x = 12,813,886.70/3,881.60
  6. Step 6: Final answer
    x = 3,301.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.