Home / 3,920.93-5,410.56-2,152.47

Finding the Fourth Proportional to 3,920.93, 5,410.56 and 2,152.47

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Solution

The fourth proportional to 3,920.93, 5,410.56 and 2,152.47 is: 2,970.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,920.93 : 5,410.56 = 2,152.47 : x
  2. Step 2: Convert to fraction form
    3,920.93/5,410.56 = 2,152.47/x
  3. Step 3: Cross multiply
    3,920.93x = 5,410.56 × 2,152.47
  4. Step 4: Simplify right side
    3,920.93x = 11,646,057.32
  5. Step 5: Solve for x
    x = 11,646,057.32/3,920.93
  6. Step 6: Final answer
    x = 2,970.23

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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.