Home / 1,590.79-2,195.07-1,001.21

Finding the Fourth Proportional to 1,590.79, 2,195.07 and 1,001.21

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Solution

The fourth proportional to 1,590.79, 2,195.07 and 1,001.21 is: 1,381.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,590.79 : 2,195.07 = 1,001.21 : x
  2. Step 2: Convert to fraction form
    1,590.79/2,195.07 = 1,001.21/x
  3. Step 3: Cross multiply
    1,590.79x = 2,195.07 × 1,001.21
  4. Step 4: Simplify right side
    1,590.79x = 2,197,726.03
  5. Step 5: Solve for x
    x = 2,197,726.03/1,590.79
  6. Step 6: Final answer
    x = 1,381.53

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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.