Home / 3,920.52-5,410.31-2,152.13

Finding the Fourth Proportional to 3,920.52, 5,410.31 and 2,152.13

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Solution

The fourth proportional to 3,920.52, 5,410.31 and 2,152.13 is: 2,969.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,920.52 : 5,410.31 = 2,152.13 : x
  2. Step 2: Convert to fraction form
    3,920.52/5,410.31 = 2,152.13/x
  3. Step 3: Cross multiply
    3,920.52x = 5,410.31 × 2,152.13
  4. Step 4: Simplify right side
    3,920.52x = 11,643,668.79
  5. Step 5: Solve for x
    x = 11,643,668.79/3,920.52
  6. Step 6: Final answer
    x = 2,969.93

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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.