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Finding the Fourth Proportional to 2,203.76, 3,041.21 and 1,209.02

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Solution

The fourth proportional to 2,203.76, 3,041.21 and 1,209.02 is: 1,668.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,203.76 : 3,041.21 = 1,209.02 : x
  2. Step 2: Convert to fraction form
    2,203.76/3,041.21 = 1,209.02/x
  3. Step 3: Cross multiply
    2,203.76x = 3,041.21 × 1,209.02
  4. Step 4: Simplify right side
    2,203.76x = 3,676,868.51
  5. Step 5: Solve for x
    x = 3,676,868.51/2,203.76
  6. Step 6: Final answer
    x = 1,668.46

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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.