Home / 5,145.78-7,715.70-4,530.72

Finding the Fourth Proportional to 5,145.78, 7,715.70 and 4,530.72

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Solution

The fourth proportional to 5,145.78, 7,715.70 and 4,530.72 is: 6,793.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,145.78 : 7,715.70 = 4,530.72 : x
  2. Step 2: Convert to fraction form
    5,145.78/7,715.70 = 4,530.72/x
  3. Step 3: Cross multiply
    5,145.78x = 7,715.70 × 4,530.72
  4. Step 4: Simplify right side
    5,145.78x = 34,957,676.30
  5. Step 5: Solve for x
    x = 34,957,676.30/5,145.78
  6. Step 6: Final answer
    x = 6,793.46

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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.