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Finding the Fourth Proportional to 7,132.94, 10,699.38 and 1,938.80

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Solution

The fourth proportional to 7,132.94, 10,699.38 and 1,938.80 is: 2,908.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,132.94 : 10,699.38 = 1,938.80 : x
  2. Step 2: Convert to fraction form
    7,132.94/10,699.38 = 1,938.80/x
  3. Step 3: Cross multiply
    7,132.94x = 10,699.38 × 1,938.80
  4. Step 4: Simplify right side
    7,132.94x = 20,743,957.94
  5. Step 5: Solve for x
    x = 20,743,957.94/7,132.94
  6. Step 6: Final answer
    x = 2,908.19

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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.