Home / 7,178.78-10,775.43-5,101.13

Finding the Fourth Proportional to 7,178.78, 10,775.43 and 5,101.13

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Solution

The fourth proportional to 7,178.78, 10,775.43 and 5,101.13 is: 7,656.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,178.78 : 10,775.43 = 5,101.13 : x
  2. Step 2: Convert to fraction form
    7,178.78/10,775.43 = 5,101.13/x
  3. Step 3: Cross multiply
    7,178.78x = 10,775.43 × 5,101.13
  4. Step 4: Simplify right side
    7,178.78x = 54,966,869.24
  5. Step 5: Solve for x
    x = 54,966,869.24/7,178.78
  6. Step 6: Final answer
    x = 7,656.85

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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.