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Finding the Fourth Proportional to 1,375.07, 2,062.60 and 913.75

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Solution

The fourth proportional to 1,375.07, 2,062.60 and 913.75 is: 1,370.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,375.07 : 2,062.60 = 913.75 : x
  2. Step 2: Convert to fraction form
    1,375.07/2,062.60 = 913.75/x
  3. Step 3: Cross multiply
    1,375.07x = 2,062.60 × 913.75
  4. Step 4: Simplify right side
    1,375.07x = 1,884,700.75
  5. Step 5: Solve for x
    x = 1,884,700.75/1,375.07
  6. Step 6: Final answer
    x = 1,370.62

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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.