Home / 2,340.72-3,230.28-1,292.88

Finding the Fourth Proportional to 2,340.72, 3,230.28 and 1,292.88

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Solution

The fourth proportional to 2,340.72, 3,230.28 and 1,292.88 is: 1,784.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,340.72 : 3,230.28 = 1,292.88 : x
  2. Step 2: Convert to fraction form
    2,340.72/3,230.28 = 1,292.88/x
  3. Step 3: Cross multiply
    2,340.72x = 3,230.28 × 1,292.88
  4. Step 4: Simplify right side
    2,340.72x = 4,176,364.41
  5. Step 5: Solve for x
    x = 4,176,364.41/2,340.72
  6. Step 6: Final answer
    x = 1,784.22

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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.