Home / 5,140.72-7,713.52-2,800.62

Finding the Fourth Proportional to 5,140.72, 7,713.52 and 2,800.62

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Solution

The fourth proportional to 5,140.72, 7,713.52 and 2,800.62 is: 4,202.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,140.72 : 7,713.52 = 2,800.62 : x
  2. Step 2: Convert to fraction form
    5,140.72/7,713.52 = 2,800.62/x
  3. Step 3: Cross multiply
    5,140.72x = 7,713.52 × 2,800.62
  4. Step 4: Simplify right side
    5,140.72x = 21,602,638.38
  5. Step 5: Solve for x
    x = 21,602,638.38/5,140.72
  6. Step 6: Final answer
    x = 4,202.26

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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.