Home / 3,851.52-5,312.56-2,278.48

Finding the Fourth Proportional to 3,851.52, 5,312.56 and 2,278.48

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Solution

The fourth proportional to 3,851.52, 5,312.56 and 2,278.48 is: 3,142.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,851.52 : 5,312.56 = 2,278.48 : x
  2. Step 2: Convert to fraction form
    3,851.52/5,312.56 = 2,278.48/x
  3. Step 3: Cross multiply
    3,851.52x = 5,312.56 × 2,278.48
  4. Step 4: Simplify right side
    3,851.52x = 12,104,561.71
  5. Step 5: Solve for x
    x = 12,104,561.71/3,851.52
  6. Step 6: Final answer
    x = 3,142.80

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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.