Home / 2,031.13-2,802.21-1,191.53

Finding the Fourth Proportional to 2,031.13, 2,802.21 and 1,191.53

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Solution

The fourth proportional to 2,031.13, 2,802.21 and 1,191.53 is: 1,643.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,031.13 : 2,802.21 = 1,191.53 : x
  2. Step 2: Convert to fraction form
    2,031.13/2,802.21 = 1,191.53/x
  3. Step 3: Cross multiply
    2,031.13x = 2,802.21 × 1,191.53
  4. Step 4: Simplify right side
    2,031.13x = 3,338,917.28
  5. Step 5: Solve for x
    x = 3,338,917.28/2,031.13
  6. Step 6: Final answer
    x = 1,643.87

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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.