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Finding the Fourth Proportional to 2,235.66, 3,085.14 and 1,240.92

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Solution

The fourth proportional to 2,235.66, 3,085.14 and 1,240.92 is: 1,712.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,235.66 : 3,085.14 = 1,240.92 : x
  2. Step 2: Convert to fraction form
    2,235.66/3,085.14 = 1,240.92/x
  3. Step 3: Cross multiply
    2,235.66x = 3,085.14 × 1,240.92
  4. Step 4: Simplify right side
    2,235.66x = 3,828,411.93
  5. Step 5: Solve for x
    x = 3,828,411.93/2,235.66
  6. Step 6: Final answer
    x = 1,712.43

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Double scale
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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.