Home / 3,851.15-5,312.18-2,278.13

Finding the Fourth Proportional to 3,851.15, 5,312.18 and 2,278.13

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Solution

The fourth proportional to 3,851.15, 5,312.18 and 2,278.13 is: 3,142.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,851.15 : 5,312.18 = 2,278.13 : x
  2. Step 2: Convert to fraction form
    3,851.15/5,312.18 = 2,278.13/x
  3. Step 3: Cross multiply
    3,851.15x = 5,312.18 × 2,278.13
  4. Step 4: Simplify right side
    3,851.15x = 12,101,815.76
  5. Step 5: Solve for x
    x = 12,101,815.76/3,851.15
  6. Step 6: Final answer
    x = 3,142.39

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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.