Home / 1,480.85-2,220.76-823.72

Finding the Fourth Proportional to 1,480.85, 2,220.76 and 823.72

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Solution

The fourth proportional to 1,480.85, 2,220.76 and 823.72 is: 1,235.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,480.85 : 2,220.76 = 823.72 : x
  2. Step 2: Convert to fraction form
    1,480.85/2,220.76 = 823.72/x
  3. Step 3: Cross multiply
    1,480.85x = 2,220.76 × 823.72
  4. Step 4: Simplify right side
    1,480.85x = 1,829,292.86
  5. Step 5: Solve for x
    x = 1,829,292.86/1,480.85
  6. Step 6: Final answer
    x = 1,235.30

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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.