Home / 3,151.62-4,339.38-2,678.58

Finding the Fourth Proportional to 3,151.62, 4,339.38 and 2,678.58

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Solution

The fourth proportional to 3,151.62, 4,339.38 and 2,678.58 is: 3,688.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,151.62 : 4,339.38 = 2,678.58 : x
  2. Step 2: Convert to fraction form
    3,151.62/4,339.38 = 2,678.58/x
  3. Step 3: Cross multiply
    3,151.62x = 4,339.38 × 2,678.58
  4. Step 4: Simplify right side
    3,151.62x = 11,623,376.48
  5. Step 5: Solve for x
    x = 11,623,376.48/3,151.62
  6. Step 6: Final answer
    x = 3,688.06

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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.