Home / 2,339.28-3,228.08-1,291.12

Finding the Fourth Proportional to 2,339.28, 3,228.08 and 1,291.12

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Solution

The fourth proportional to 2,339.28, 3,228.08 and 1,291.12 is: 1,781.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,339.28 : 3,228.08 = 1,291.12 : x
  2. Step 2: Convert to fraction form
    2,339.28/3,228.08 = 1,291.12/x
  3. Step 3: Cross multiply
    2,339.28x = 3,228.08 × 1,291.12
  4. Step 4: Simplify right side
    2,339.28x = 4,167,838.65
  5. Step 5: Solve for x
    x = 4,167,838.65/2,339.28
  6. Step 6: Final answer
    x = 1,781.68

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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.