Home / 5,211.28-7,813.46-2,872.40

Finding the Fourth Proportional to 5,211.28, 7,813.46 and 2,872.40

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Solution

The fourth proportional to 5,211.28, 7,813.46 and 2,872.40 is: 4,306.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,211.28 : 7,813.46 = 2,872.40 : x
  2. Step 2: Convert to fraction form
    5,211.28/7,813.46 = 2,872.40/x
  3. Step 3: Cross multiply
    5,211.28x = 7,813.46 × 2,872.40
  4. Step 4: Simplify right side
    5,211.28x = 22,443,382.50
  5. Step 5: Solve for x
    x = 22,443,382.50/5,211.28
  6. Step 6: Final answer
    x = 4,306.69

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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.