Home / 1,586.98-2,190.30-1,090.75

Finding the Fourth Proportional to 1,586.98, 2,190.30 and 1,090.75

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Solution

The fourth proportional to 1,586.98, 2,190.30 and 1,090.75 is: 1,505.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,586.98 : 2,190.30 = 1,090.75 : x
  2. Step 2: Convert to fraction form
    1,586.98/2,190.30 = 1,090.75/x
  3. Step 3: Cross multiply
    1,586.98x = 2,190.30 × 1,090.75
  4. Step 4: Simplify right side
    1,586.98x = 2,389,069.73
  5. Step 5: Solve for x
    x = 2,389,069.73/1,586.98
  6. Step 6: Final answer
    x = 1,505.42

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Half scale
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Double scale
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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.