Home / 5,143.40-7,715.10-4,815.35

Finding the Fourth Proportional to 5,143.40, 7,715.10 and 4,815.35

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Solution

The fourth proportional to 5,143.40, 7,715.10 and 4,815.35 is: 7,223.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,143.40 : 7,715.10 = 4,815.35 : x
  2. Step 2: Convert to fraction form
    5,143.40/7,715.10 = 4,815.35/x
  3. Step 3: Cross multiply
    5,143.40x = 7,715.10 × 4,815.35
  4. Step 4: Simplify right side
    5,143.40x = 37,150,906.79
  5. Step 5: Solve for x
    x = 37,150,906.79/5,143.40
  6. Step 6: Final answer
    x = 7,223.03

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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.