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Finding the Fourth Proportional to 1,399.70, 2,098.02 and 1,335.08

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Solution

The fourth proportional to 1,399.70, 2,098.02 and 1,335.08 is: 2,001.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,399.70 : 2,098.02 = 1,335.08 : x
  2. Step 2: Convert to fraction form
    1,399.70/2,098.02 = 1,335.08/x
  3. Step 3: Cross multiply
    1,399.70x = 2,098.02 × 1,335.08
  4. Step 4: Simplify right side
    1,399.70x = 2,801,024.54
  5. Step 5: Solve for x
    x = 2,801,024.54/1,399.70
  6. Step 6: Final answer
    x = 2,001.16

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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.