Home / 2,272.11-3,135.61-1,277.39

Finding the Fourth Proportional to 2,272.11, 3,135.61 and 1,277.39

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Solution

The fourth proportional to 2,272.11, 3,135.61 and 1,277.39 is: 1,762.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,272.11 : 3,135.61 = 1,277.39 : x
  2. Step 2: Convert to fraction form
    2,272.11/3,135.61 = 1,277.39/x
  3. Step 3: Cross multiply
    2,272.11x = 3,135.61 × 1,277.39
  4. Step 4: Simplify right side
    2,272.11x = 4,005,389.74
  5. Step 5: Solve for x
    x = 4,005,389.74/2,272.11
  6. Step 6: Final answer
    x = 1,762.85

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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.