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Finding the Fourth Proportional to 1,452.74, 2,004.75 and 789.57

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Solution

The fourth proportional to 1,452.74, 2,004.75 and 789.57 is: 1,089.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,452.74 : 2,004.75 = 789.57 : x
  2. Step 2: Convert to fraction form
    1,452.74/2,004.75 = 789.57/x
  3. Step 3: Cross multiply
    1,452.74x = 2,004.75 × 789.57
  4. Step 4: Simplify right side
    1,452.74x = 1,582,890.46
  5. Step 5: Solve for x
    x = 1,582,890.46/1,452.74
  6. Step 6: Final answer
    x = 1,089.59

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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.