Home / 1,659.25-2,289.92-913.36

Finding the Fourth Proportional to 1,659.25, 2,289.92 and 913.36

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Solution

The fourth proportional to 1,659.25, 2,289.92 and 913.36 is: 1,260.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,659.25 : 2,289.92 = 913.36 : x
  2. Step 2: Convert to fraction form
    1,659.25/2,289.92 = 913.36/x
  3. Step 3: Cross multiply
    1,659.25x = 2,289.92 × 913.36
  4. Step 4: Simplify right side
    1,659.25x = 2,091,511.04
  5. Step 5: Solve for x
    x = 2,091,511.04/1,659.25
  6. Step 6: Final answer
    x = 1,260.52

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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.