Home / 1,660.56-2,290.20-1,188.24

Finding the Fourth Proportional to 1,660.56, 2,290.20 and 1,188.24

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Solution

The fourth proportional to 1,660.56, 2,290.20 and 1,188.24 is: 1,638.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,660.56 : 2,290.20 = 1,188.24 : x
  2. Step 2: Convert to fraction form
    1,660.56/2,290.20 = 1,188.24/x
  3. Step 3: Cross multiply
    1,660.56x = 2,290.20 × 1,188.24
  4. Step 4: Simplify right side
    1,660.56x = 2,721,307.25
  5. Step 5: Solve for x
    x = 2,721,307.25/1,660.56
  6. Step 6: Final answer
    x = 1,638.79

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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.