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Finding the Fourth Proportional to 5,160.62, 7,121.62 and 2,802.74

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Solution

The fourth proportional to 5,160.62, 7,121.62 and 2,802.74 is: 3,867.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,160.62 : 7,121.62 = 2,802.74 : x
  2. Step 2: Convert to fraction form
    5,160.62/7,121.62 = 2,802.74/x
  3. Step 3: Cross multiply
    5,160.62x = 7,121.62 × 2,802.74
  4. Step 4: Simplify right side
    5,160.62x = 19,960,006.62
  5. Step 5: Solve for x
    x = 19,960,006.62/5,160.62
  6. Step 6: Final answer
    x = 3,867.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.