Home / 3,391.86-4,680.75-3,113.22

Finding the Fourth Proportional to 3,391.86, 4,680.75 and 3,113.22

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Solution

The fourth proportional to 3,391.86, 4,680.75 and 3,113.22 is: 4,296.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,391.86 : 4,680.75 = 3,113.22 : x
  2. Step 2: Convert to fraction form
    3,391.86/4,680.75 = 3,113.22/x
  3. Step 3: Cross multiply
    3,391.86x = 4,680.75 × 3,113.22
  4. Step 4: Simplify right side
    3,391.86x = 14,572,204.52
  5. Step 5: Solve for x
    x = 14,572,204.52/3,391.86
  6. Step 6: Final answer
    x = 4,296.23

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Half scale
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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.