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Finding the Fourth Proportional to 1,662.65, 2,292.95 and 1,331.09

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Solution

The fourth proportional to 1,662.65, 2,292.95 and 1,331.09 is: 1,835.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,662.65 : 2,292.95 = 1,331.09 : x
  2. Step 2: Convert to fraction form
    1,662.65/2,292.95 = 1,331.09/x
  3. Step 3: Cross multiply
    1,662.65x = 2,292.95 × 1,331.09
  4. Step 4: Simplify right side
    1,662.65x = 3,052,116.16
  5. Step 5: Solve for x
    x = 3,052,116.16/1,662.65
  6. Step 6: Final answer
    x = 1,835.69

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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.