Home / 1,452.21-2,179.13-722.49

Finding the Fourth Proportional to 1,452.21, 2,179.13 and 722.49

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Solution

The fourth proportional to 1,452.21, 2,179.13 and 722.49 is: 1,084.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,452.21 : 2,179.13 = 722.49 : x
  2. Step 2: Convert to fraction form
    1,452.21/2,179.13 = 722.49/x
  3. Step 3: Cross multiply
    1,452.21x = 2,179.13 × 722.49
  4. Step 4: Simplify right side
    1,452.21x = 1,574,396.02
  5. Step 5: Solve for x
    x = 1,574,396.02/1,452.21
  6. Step 6: Final answer
    x = 1,084.14

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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.