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Finding the Fourth Proportional to 2,347.70, 3,239.75 and 1,353.02

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Solution

The fourth proportional to 2,347.70, 3,239.75 and 1,353.02 is: 1,867.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,347.70 : 3,239.75 = 1,353.02 : x
  2. Step 2: Convert to fraction form
    2,347.70/3,239.75 = 1,353.02/x
  3. Step 3: Cross multiply
    2,347.70x = 3,239.75 × 1,353.02
  4. Step 4: Simplify right side
    2,347.70x = 4,383,423.58
  5. Step 5: Solve for x
    x = 4,383,423.58/2,347.70
  6. Step 6: Final answer
    x = 1,867.12

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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.