Home / 1,480.05-2,220.57-749.43

Finding the Fourth Proportional to 1,480.05, 2,220.57 and 749.43

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Solution

The fourth proportional to 1,480.05, 2,220.57 and 749.43 is: 1,124.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,480.05 : 2,220.57 = 749.43 : x
  2. Step 2: Convert to fraction form
    1,480.05/2,220.57 = 749.43/x
  3. Step 3: Cross multiply
    1,480.05x = 2,220.57 × 749.43
  4. Step 4: Simplify right side
    1,480.05x = 1,664,161.78
  5. Step 5: Solve for x
    x = 1,664,161.78/1,480.05
  6. Step 6: Final answer
    x = 1,124.40

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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.