Home / 3,758.78-5,187.56-2,186.87

Finding the Fourth Proportional to 3,758.78, 5,187.56 and 2,186.87

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Solution

The fourth proportional to 3,758.78, 5,187.56 and 2,186.87 is: 3,018.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,758.78 : 5,187.56 = 2,186.87 : x
  2. Step 2: Convert to fraction form
    3,758.78/5,187.56 = 2,186.87/x
  3. Step 3: Cross multiply
    3,758.78x = 5,187.56 × 2,186.87
  4. Step 4: Simplify right side
    3,758.78x = 11,344,482.47
  5. Step 5: Solve for x
    x = 11,344,482.47/3,758.78
  6. Step 6: Final answer
    x = 3,018.13

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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.