Home / 1,659.48-2,290.68-1,239.12

Finding the Fourth Proportional to 1,659.48, 2,290.68 and 1,239.12

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Solution

The fourth proportional to 1,659.48, 2,290.68 and 1,239.12 is: 1,710.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,659.48 : 2,290.68 = 1,239.12 : x
  2. Step 2: Convert to fraction form
    1,659.48/2,290.68 = 1,239.12/x
  3. Step 3: Cross multiply
    1,659.48x = 2,290.68 × 1,239.12
  4. Step 4: Simplify right side
    1,659.48x = 2,838,427.40
  5. Step 5: Solve for x
    x = 2,838,427.40/1,659.48
  6. Step 6: Final answer
    x = 1,710.43

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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.