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Finding the Fourth Proportional to 2,143.48, 3,215.22 and 604.48

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Solution

The fourth proportional to 2,143.48, 3,215.22 and 604.48 is: 906.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,143.48 : 3,215.22 = 604.48 : x
  2. Step 2: Convert to fraction form
    2,143.48/3,215.22 = 604.48/x
  3. Step 3: Cross multiply
    2,143.48x = 3,215.22 × 604.48
  4. Step 4: Simplify right side
    2,143.48x = 1,943,536.19
  5. Step 5: Solve for x
    x = 1,943,536.19/2,143.48
  6. Step 6: Final answer
    x = 906.72

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Double scale
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Similar ratio
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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.