Home / 3,851.12-5,776.72-1,253.76

Finding the Fourth Proportional to 3,851.12, 5,776.72 and 1,253.76

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Solution

The fourth proportional to 3,851.12, 5,776.72 and 1,253.76 is: 1,880.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,851.12 : 5,776.72 = 1,253.76 : x
  2. Step 2: Convert to fraction form
    3,851.12/5,776.72 = 1,253.76/x
  3. Step 3: Cross multiply
    3,851.12x = 5,776.72 × 1,253.76
  4. Step 4: Simplify right side
    3,851.12x = 7,242,620.47
  5. Step 5: Solve for x
    x = 7,242,620.47/3,851.12
  6. Step 6: Final answer
    x = 1,880.65

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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.