Home / 1,417.11-2,121.72-1,069.39

Finding the Fourth Proportional to 1,417.11, 2,121.72 and 1,069.39

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Solution

The fourth proportional to 1,417.11, 2,121.72 and 1,069.39 is: 1,601.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,417.11 : 2,121.72 = 1,069.39 : x
  2. Step 2: Convert to fraction form
    1,417.11/2,121.72 = 1,069.39/x
  3. Step 3: Cross multiply
    1,417.11x = 2,121.72 × 1,069.39
  4. Step 4: Simplify right side
    1,417.11x = 2,268,946.15
  5. Step 5: Solve for x
    x = 2,268,946.15/1,417.11
  6. Step 6: Final answer
    x = 1,601.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.