Home / 1,948.66-2,689.37-1,086.39

Finding the Fourth Proportional to 1,948.66, 2,689.37 and 1,086.39

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Solution

The fourth proportional to 1,948.66, 2,689.37 and 1,086.39 is: 1,499.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,948.66 : 2,689.37 = 1,086.39 : x
  2. Step 2: Convert to fraction form
    1,948.66/2,689.37 = 1,086.39/x
  3. Step 3: Cross multiply
    1,948.66x = 2,689.37 × 1,086.39
  4. Step 4: Simplify right side
    1,948.66x = 2,921,704.67
  5. Step 5: Solve for x
    x = 2,921,704.67/1,948.66
  6. Step 6: Final answer
    x = 1,499.34

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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.