Home / 4,949.47-7,424.68-1,391.58

Finding the Fourth Proportional to 4,949.47, 7,424.68 and 1,391.58

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Solution

The fourth proportional to 4,949.47, 7,424.68 and 1,391.58 is: 2,087.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,949.47 : 7,424.68 = 1,391.58 : x
  2. Step 2: Convert to fraction form
    4,949.47/7,424.68 = 1,391.58/x
  3. Step 3: Cross multiply
    4,949.47x = 7,424.68 × 1,391.58
  4. Step 4: Simplify right side
    4,949.47x = 10,332,035.32
  5. Step 5: Solve for x
    x = 10,332,035.32/4,949.47
  6. Step 6: Final answer
    x = 2,087.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.