Home / 1,590.68-2,195.26-1,001.72

Finding the Fourth Proportional to 1,590.68, 2,195.26 and 1,001.72

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Solution

The fourth proportional to 1,590.68, 2,195.26 and 1,001.72 is: 1,382.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,590.68 : 2,195.26 = 1,001.72 : x
  2. Step 2: Convert to fraction form
    1,590.68/2,195.26 = 1,001.72/x
  3. Step 3: Cross multiply
    1,590.68x = 2,195.26 × 1,001.72
  4. Step 4: Simplify right side
    1,590.68x = 2,199,035.85
  5. Step 5: Solve for x
    x = 2,199,035.85/1,590.68
  6. Step 6: Final answer
    x = 1,382.45

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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.