Home / 5,115.42-7,658.39-3,000.65

Finding the Fourth Proportional to 5,115.42, 7,658.39 and 3,000.65

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Solution

The fourth proportional to 5,115.42, 7,658.39 and 3,000.65 is: 4,492.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,115.42 : 7,658.39 = 3,000.65 : x
  2. Step 2: Convert to fraction form
    5,115.42/7,658.39 = 3,000.65/x
  3. Step 3: Cross multiply
    5,115.42x = 7,658.39 × 3,000.65
  4. Step 4: Simplify right side
    5,115.42x = 22,980,117.16
  5. Step 5: Solve for x
    x = 22,980,117.16/5,115.42
  6. Step 6: Final answer
    x = 4,492.32

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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.