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Finding the Fourth Proportional to 2,203.80, 3,302.88 and 903.72

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Solution

The fourth proportional to 2,203.80, 3,302.88 and 903.72 is: 1,354.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,203.80 : 3,302.88 = 903.72 : x
  2. Step 2: Convert to fraction form
    2,203.80/3,302.88 = 903.72/x
  3. Step 3: Cross multiply
    2,203.80x = 3,302.88 × 903.72
  4. Step 4: Simplify right side
    2,203.80x = 2,984,878.71
  5. Step 5: Solve for x
    x = 2,984,878.71/2,203.80
  6. Step 6: Final answer
    x = 1,354.42

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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.