Home / 3,440.39-4,747.86-1,948.28

Finding the Fourth Proportional to 3,440.39, 4,747.86 and 1,948.28

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Solution

The fourth proportional to 3,440.39, 4,747.86 and 1,948.28 is: 2,688.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,440.39 : 4,747.86 = 1,948.28 : x
  2. Step 2: Convert to fraction form
    3,440.39/4,747.86 = 1,948.28/x
  3. Step 3: Cross multiply
    3,440.39x = 4,747.86 × 1,948.28
  4. Step 4: Simplify right side
    3,440.39x = 9,250,160.68
  5. Step 5: Solve for x
    x = 9,250,160.68/3,440.39
  6. Step 6: Final answer
    x = 2,688.70

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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.