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Finding the Fourth Proportional to 5,168.70, 7,132.68 and 2,810.70

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Solution

The fourth proportional to 5,168.70, 7,132.68 and 2,810.70 is: 3,878.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,168.70 : 7,132.68 = 2,810.70 : x
  2. Step 2: Convert to fraction form
    5,168.70/7,132.68 = 2,810.70/x
  3. Step 3: Cross multiply
    5,168.70x = 7,132.68 × 2,810.70
  4. Step 4: Simplify right side
    5,168.70x = 20,047,823.68
  5. Step 5: Solve for x
    x = 20,047,823.68/5,168.70
  6. Step 6: Final answer
    x = 3,878.70

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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.