Home / 1,590.89-2,195.64-1,001.21

Finding the Fourth Proportional to 1,590.89, 2,195.64 and 1,001.21

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Solution

The fourth proportional to 1,590.89, 2,195.64 and 1,001.21 is: 1,381.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,590.89 : 2,195.64 = 1,001.21 : x
  2. Step 2: Convert to fraction form
    1,590.89/2,195.64 = 1,001.21/x
  3. Step 3: Cross multiply
    1,590.89x = 2,195.64 × 1,001.21
  4. Step 4: Simplify right side
    1,590.89x = 2,198,285.75
  5. Step 5: Solve for x
    x = 2,198,285.75/1,590.89
  6. Step 6: Final answer
    x = 1,381.80

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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.