Home / 5,143.78-7,712.70-4,528.72

Finding the Fourth Proportional to 5,143.78, 7,712.70 and 4,528.72

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Solution

The fourth proportional to 5,143.78, 7,712.70 and 4,528.72 is: 6,790.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,143.78 : 7,712.70 = 4,528.72 : x
  2. Step 2: Convert to fraction form
    5,143.78/7,712.70 = 4,528.72/x
  3. Step 3: Cross multiply
    5,143.78x = 7,712.70 × 4,528.72
  4. Step 4: Simplify right side
    5,143.78x = 34,928,658.74
  5. Step 5: Solve for x
    x = 34,928,658.74/5,143.78
  6. Step 6: Final answer
    x = 6,790.47

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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.