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Finding the Fourth Proportional to 3,468.13, 4,788.53 and 2,143.65

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Solution

The fourth proportional to 3,468.13, 4,788.53 and 2,143.65 is: 2,959.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,468.13 : 4,788.53 = 2,143.65 : x
  2. Step 2: Convert to fraction form
    3,468.13/4,788.53 = 2,143.65/x
  3. Step 3: Cross multiply
    3,468.13x = 4,788.53 × 2,143.65
  4. Step 4: Simplify right side
    3,468.13x = 10,264,921.62
  5. Step 5: Solve for x
    x = 10,264,921.62/3,468.13
  6. Step 6: Final answer
    x = 2,959.79

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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.