Home / 2,272.79-3,135.56-1,277.84

Finding the Fourth Proportional to 2,272.79, 3,135.56 and 1,277.84

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Solution

The fourth proportional to 2,272.79, 3,135.56 and 1,277.84 is: 1,762.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,272.79 : 3,135.56 = 1,277.84 : x
  2. Step 2: Convert to fraction form
    2,272.79/3,135.56 = 1,277.84/x
  3. Step 3: Cross multiply
    2,272.79x = 3,135.56 × 1,277.84
  4. Step 4: Simplify right side
    2,272.79x = 4,006,721.92
  5. Step 5: Solve for x
    x = 4,006,721.92/2,272.79
  6. Step 6: Final answer
    x = 1,762.91

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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.