Home / 3,117.65-4,302.32-1,791.25

Finding the Fourth Proportional to 3,117.65, 4,302.32 and 1,791.25

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Solution

The fourth proportional to 3,117.65, 4,302.32 and 1,791.25 is: 2,471.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,117.65 : 4,302.32 = 1,791.25 : x
  2. Step 2: Convert to fraction form
    3,117.65/4,302.32 = 1,791.25/x
  3. Step 3: Cross multiply
    3,117.65x = 4,302.32 × 1,791.25
  4. Step 4: Simplify right side
    3,117.65x = 7,706,517.04
  5. Step 5: Solve for x
    x = 7,706,517.04/3,117.65
  6. Step 6: Final answer
    x = 2,471.90

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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.