Home / 3,920.60-5,410.46-2,152.16

Finding the Fourth Proportional to 3,920.60, 5,410.46 and 2,152.16

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Solution

The fourth proportional to 3,920.60, 5,410.46 and 2,152.16 is: 2,970.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,920.60 : 5,410.46 = 2,152.16 : x
  2. Step 2: Convert to fraction form
    3,920.60/5,410.46 = 2,152.16/x
  3. Step 3: Cross multiply
    3,920.60x = 5,410.46 × 2,152.16
  4. Step 4: Simplify right side
    3,920.60x = 11,644,194.50
  5. Step 5: Solve for x
    x = 11,644,194.50/3,920.60
  6. Step 6: Final answer
    x = 2,970.01

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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.