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Finding the Fourth Proportional to 1,240.02, 1,723.10 and 1,226.52

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Solution

The fourth proportional to 1,240.02, 1,723.10 and 1,226.52 is: 1,704.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,240.02 : 1,723.10 = 1,226.52 : x
  2. Step 2: Convert to fraction form
    1,240.02/1,723.10 = 1,226.52/x
  3. Step 3: Cross multiply
    1,240.02x = 1,723.10 × 1,226.52
  4. Step 4: Simplify right side
    1,240.02x = 2,113,410.48
  5. Step 5: Solve for x
    x = 2,113,410.48/1,240.02
  6. Step 6: Final answer
    x = 1,704.34

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Double scale
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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.