Home / 3,852.85-5,775.76-1,387.11

Finding the Fourth Proportional to 3,852.85, 5,775.76 and 1,387.11

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Solution

The fourth proportional to 3,852.85, 5,775.76 and 1,387.11 is: 2,079.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,852.85 : 5,775.76 = 1,387.11 : x
  2. Step 2: Convert to fraction form
    3,852.85/5,775.76 = 1,387.11/x
  3. Step 3: Cross multiply
    3,852.85x = 5,775.76 × 1,387.11
  4. Step 4: Simplify right side
    3,852.85x = 8,011,578.64
  5. Step 5: Solve for x
    x = 8,011,578.64/3,852.85
  6. Step 6: Final answer
    x = 2,079.39

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1.5x scale

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.