Home / 5,121.12-7,641.51-4,807.65

Finding the Fourth Proportional to 5,121.12, 7,641.51 and 4,807.65

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Solution

The fourth proportional to 5,121.12, 7,641.51 and 4,807.65 is: 7,173.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,121.12 : 7,641.51 = 4,807.65 : x
  2. Step 2: Convert to fraction form
    5,121.12/7,641.51 = 4,807.65/x
  3. Step 3: Cross multiply
    5,121.12x = 7,641.51 × 4,807.65
  4. Step 4: Simplify right side
    5,121.12x = 36,737,716.18
  5. Step 5: Solve for x
    x = 36,737,716.18/5,121.12
  6. Step 6: Final answer
    x = 7,173.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.