Home / 5,143.87-7,715.80-1,248.27

Finding the Fourth Proportional to 5,143.87, 7,715.80 and 1,248.27

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Solution

The fourth proportional to 5,143.87, 7,715.80 and 1,248.27 is: 1,872.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,143.87 : 7,715.80 = 1,248.27 : x
  2. Step 2: Convert to fraction form
    5,143.87/7,715.80 = 1,248.27/x
  3. Step 3: Cross multiply
    5,143.87x = 7,715.80 × 1,248.27
  4. Step 4: Simplify right side
    5,143.87x = 9,631,401.67
  5. Step 5: Solve for x
    x = 9,631,401.67/5,143.87
  6. Step 6: Final answer
    x = 1,872.40

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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.