Home / 1,948.11-2,686.88-1,161.99

Finding the Fourth Proportional to 1,948.11, 2,686.88 and 1,161.99

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Solution

The fourth proportional to 1,948.11, 2,686.88 and 1,161.99 is: 1,602.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,948.11 : 2,686.88 = 1,161.99 : x
  2. Step 2: Convert to fraction form
    1,948.11/2,686.88 = 1,161.99/x
  3. Step 3: Cross multiply
    1,948.11x = 2,686.88 × 1,161.99
  4. Step 4: Simplify right side
    1,948.11x = 3,122,121.88
  5. Step 5: Solve for x
    x = 3,122,121.88/1,948.11
  6. Step 6: Final answer
    x = 1,602.64

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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.