Home / 5,187.38-7,780.99-2,412.49

Finding the Fourth Proportional to 5,187.38, 7,780.99 and 2,412.49

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Solution

The fourth proportional to 5,187.38, 7,780.99 and 2,412.49 is: 3,618.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,187.38 : 7,780.99 = 2,412.49 : x
  2. Step 2: Convert to fraction form
    5,187.38/7,780.99 = 2,412.49/x
  3. Step 3: Cross multiply
    5,187.38x = 7,780.99 × 2,412.49
  4. Step 4: Simplify right side
    5,187.38x = 18,771,569.29
  5. Step 5: Solve for x
    x = 18,771,569.29/5,187.38
  6. Step 6: Final answer
    x = 3,618.70

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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.