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Finding the Fourth Proportional to 2,300.40, 3,191.40 and 2,203.20

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Solution

The fourth proportional to 2,300.40, 3,191.40 and 2,203.20 is: 3,056.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,300.40 : 3,191.40 = 2,203.20 : x
  2. Step 2: Convert to fraction form
    2,300.40/3,191.40 = 2,203.20/x
  3. Step 3: Cross multiply
    2,300.40x = 3,191.40 × 2,203.20
  4. Step 4: Simplify right side
    2,300.40x = 7,031,292.48
  5. Step 5: Solve for x
    x = 7,031,292.48/2,300.40
  6. Step 6: Final answer
    x = 3,056.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.