Home / 2,223.20-3,335.36-1,128.16

Finding the Fourth Proportional to 2,223.20, 3,335.36 and 1,128.16

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Solution

The fourth proportional to 2,223.20, 3,335.36 and 1,128.16 is: 1,692.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,223.20 : 3,335.36 = 1,128.16 : x
  2. Step 2: Convert to fraction form
    2,223.20/3,335.36 = 1,128.16/x
  3. Step 3: Cross multiply
    2,223.20x = 3,335.36 × 1,128.16
  4. Step 4: Simplify right side
    2,223.20x = 3,762,819.74
  5. Step 5: Solve for x
    x = 3,762,819.74/2,223.20
  6. Step 6: Final answer
    x = 1,692.52

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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.