Home / 1,586.18-2,188.82-1,255.40

Finding the Fourth Proportional to 1,586.18, 2,188.82 and 1,255.40

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Solution

The fourth proportional to 1,586.18, 2,188.82 and 1,255.40 is: 1,732.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,586.18 : 2,188.82 = 1,255.40 : x
  2. Step 2: Convert to fraction form
    1,586.18/2,188.82 = 1,255.40/x
  3. Step 3: Cross multiply
    1,586.18x = 2,188.82 × 1,255.40
  4. Step 4: Simplify right side
    1,586.18x = 2,747,845.03
  5. Step 5: Solve for x
    x = 2,747,845.03/1,586.18
  6. Step 6: Final answer
    x = 1,732.36

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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.