Home / 1,452.45-2,004.34-789.28

Finding the Fourth Proportional to 1,452.45, 2,004.34 and 789.28

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Solution

The fourth proportional to 1,452.45, 2,004.34 and 789.28 is: 1,089.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,452.45 : 2,004.34 = 789.28 : x
  2. Step 2: Convert to fraction form
    1,452.45/2,004.34 = 789.28/x
  3. Step 3: Cross multiply
    1,452.45x = 2,004.34 × 789.28
  4. Step 4: Simplify right side
    1,452.45x = 1,581,985.48
  5. Step 5: Solve for x
    x = 1,581,985.48/1,452.45
  6. Step 6: Final answer
    x = 1,089.18

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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.