Home / 3,877.04-5,351.40-2,385.20

Finding the Fourth Proportional to 3,877.04, 5,351.40 and 2,385.20

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Solution

The fourth proportional to 3,877.04, 5,351.40 and 2,385.20 is: 3,292.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,877.04 : 5,351.40 = 2,385.20 : x
  2. Step 2: Convert to fraction form
    3,877.04/5,351.40 = 2,385.20/x
  3. Step 3: Cross multiply
    3,877.04x = 5,351.40 × 2,385.20
  4. Step 4: Simplify right side
    3,877.04x = 12,764,159.28
  5. Step 5: Solve for x
    x = 12,764,159.28/3,877.04
  6. Step 6: Final answer
    x = 3,292.24

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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.