Home / 3,920.10-5,409.36-2,348.16

Finding the Fourth Proportional to 3,920.10, 5,409.36 and 2,348.16

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Solution

The fourth proportional to 3,920.10, 5,409.36 and 2,348.16 is: 3,240.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,920.10 : 5,409.36 = 2,348.16 : x
  2. Step 2: Convert to fraction form
    3,920.10/5,409.36 = 2,348.16/x
  3. Step 3: Cross multiply
    3,920.10x = 5,409.36 × 2,348.16
  4. Step 4: Simplify right side
    3,920.10x = 12,702,042.78
  5. Step 5: Solve for x
    x = 12,702,042.78/3,920.10
  6. Step 6: Final answer
    x = 3,240.23

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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.