Home / 1,946.78-2,686.88-1,161.29

Finding the Fourth Proportional to 1,946.78, 2,686.88 and 1,161.29

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Solution

The fourth proportional to 1,946.78, 2,686.88 and 1,161.29 is: 1,602.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,946.78 : 2,686.88 = 1,161.29 : x
  2. Step 2: Convert to fraction form
    1,946.78/2,686.88 = 1,161.29/x
  3. Step 3: Cross multiply
    1,946.78x = 2,686.88 × 1,161.29
  4. Step 4: Simplify right side
    1,946.78x = 3,120,246.88
  5. Step 5: Solve for x
    x = 3,120,246.88/1,946.78
  6. Step 6: Final answer
    x = 1,602.77

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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.