Home / 1,590.72-2,195.20-892.14

Finding the Fourth Proportional to 1,590.72, 2,195.20 and 892.14

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Solution

The fourth proportional to 1,590.72, 2,195.20 and 892.14 is: 1,231.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,590.72 : 2,195.20 = 892.14 : x
  2. Step 2: Convert to fraction form
    1,590.72/2,195.20 = 892.14/x
  3. Step 3: Cross multiply
    1,590.72x = 2,195.20 × 892.14
  4. Step 4: Simplify right side
    1,590.72x = 1,958,425.73
  5. Step 5: Solve for x
    x = 1,958,425.73/1,590.72
  6. Step 6: Final answer
    x = 1,231.16

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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.