Home / 5,143.70-7,715.55-3,904.40

Finding the Fourth Proportional to 5,143.70, 7,715.55 and 3,904.40

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Solution

The fourth proportional to 5,143.70, 7,715.55 and 3,904.40 is: 5,856.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,143.70 : 7,715.55 = 3,904.40 : x
  2. Step 2: Convert to fraction form
    5,143.70/7,715.55 = 3,904.40/x
  3. Step 3: Cross multiply
    5,143.70x = 7,715.55 × 3,904.40
  4. Step 4: Simplify right side
    5,143.70x = 30,124,593.42
  5. Step 5: Solve for x
    x = 30,124,593.42/5,143.70
  6. Step 6: Final answer
    x = 5,856.60

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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.