Home / 3,851.80-5,777.16-1,254.40

Finding the Fourth Proportional to 3,851.80, 5,777.16 and 1,254.40

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Solution

The fourth proportional to 3,851.80, 5,777.16 and 1,254.40 is: 1,881.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,851.80 : 5,777.16 = 1,254.40 : x
  2. Step 2: Convert to fraction form
    3,851.80/5,777.16 = 1,254.40/x
  3. Step 3: Cross multiply
    3,851.80x = 5,777.16 × 1,254.40
  4. Step 4: Simplify right side
    3,851.80x = 7,246,869.50
  5. Step 5: Solve for x
    x = 7,246,869.50/3,851.80
  6. Step 6: Final answer
    x = 1,881.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.