Home / 5,115.49-7,635.89-4,389.73

Finding the Fourth Proportional to 5,115.49, 7,635.89 and 4,389.73

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Solution

The fourth proportional to 5,115.49, 7,635.89 and 4,389.73 is: 6,552.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,115.49 : 7,635.89 = 4,389.73 : x
  2. Step 2: Convert to fraction form
    5,115.49/7,635.89 = 4,389.73/x
  3. Step 3: Cross multiply
    5,115.49x = 7,635.89 × 4,389.73
  4. Step 4: Simplify right side
    5,115.49x = 33,519,495.41
  5. Step 5: Solve for x
    x = 33,519,495.41/5,115.49
  6. Step 6: Final answer
    x = 6,552.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.