Home / 1,612.35-2,223.99-1,280.25

Finding the Fourth Proportional to 1,612.35, 2,223.99 and 1,280.25

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Solution

The fourth proportional to 1,612.35, 2,223.99 and 1,280.25 is: 1,765.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,612.35 : 2,223.99 = 1,280.25 : x
  2. Step 2: Convert to fraction form
    1,612.35/2,223.99 = 1,280.25/x
  3. Step 3: Cross multiply
    1,612.35x = 2,223.99 × 1,280.25
  4. Step 4: Simplify right side
    1,612.35x = 2,847,263.20
  5. Step 5: Solve for x
    x = 2,847,263.20/1,612.35
  6. Step 6: Final answer
    x = 1,765.91

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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.