Home / 3,871.60-5,339.51-2,612.45

Finding the Fourth Proportional to 3,871.60, 5,339.51 and 2,612.45

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Solution

The fourth proportional to 3,871.60, 5,339.51 and 2,612.45 is: 3,602.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,871.60 : 5,339.51 = 2,612.45 : x
  2. Step 2: Convert to fraction form
    3,871.60/5,339.51 = 2,612.45/x
  3. Step 3: Cross multiply
    3,871.60x = 5,339.51 × 2,612.45
  4. Step 4: Simplify right side
    3,871.60x = 13,949,202.90
  5. Step 5: Solve for x
    x = 13,949,202.90/3,871.60
  6. Step 6: Final answer
    x = 3,602.96

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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.