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Finding the Fourth Proportional to 2,347.71, 3,240.18 and 1,352.79

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Solution

The fourth proportional to 2,347.71, 3,240.18 and 1,352.79 is: 1,867.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,347.71 : 3,240.18 = 1,352.79 : x
  2. Step 2: Convert to fraction form
    2,347.71/3,240.18 = 1,352.79/x
  3. Step 3: Cross multiply
    2,347.71x = 3,240.18 × 1,352.79
  4. Step 4: Simplify right side
    2,347.71x = 4,383,283.10
  5. Step 5: Solve for x
    x = 4,383,283.10/2,347.71
  6. Step 6: Final answer
    x = 1,867.05

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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.