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Finding the Fourth Proportional to 2,223.28, 3,335.28 and 684.28

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Solution

The fourth proportional to 2,223.28, 3,335.28 and 684.28 is: 1,026.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,223.28 : 3,335.28 = 684.28 : x
  2. Step 2: Convert to fraction form
    2,223.28/3,335.28 = 684.28/x
  3. Step 3: Cross multiply
    2,223.28x = 3,335.28 × 684.28
  4. Step 4: Simplify right side
    2,223.28x = 2,282,265.40
  5. Step 5: Solve for x
    x = 2,282,265.40/2,223.28
  6. Step 6: Final answer
    x = 1,026.53

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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.