Home / 1,950.36-2,689.56-1,390.74

Finding the Fourth Proportional to 1,950.36, 2,689.56 and 1,390.74

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Solution

The fourth proportional to 1,950.36, 2,689.56 and 1,390.74 is: 1,917.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,950.36 : 2,689.56 = 1,390.74 : x
  2. Step 2: Convert to fraction form
    1,950.36/2,689.56 = 1,390.74/x
  3. Step 3: Cross multiply
    1,950.36x = 2,689.56 × 1,390.74
  4. Step 4: Simplify right side
    1,950.36x = 3,740,478.67
  5. Step 5: Solve for x
    x = 3,740,478.67/1,950.36
  6. Step 6: Final answer
    x = 1,917.84

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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.