Home / 1,194.30-1,798.29-1,121.40

Finding the Fourth Proportional to 1,194.30, 1,798.29 and 1,121.40

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Solution

The fourth proportional to 1,194.30, 1,798.29 and 1,121.40 is: 1,688.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,194.30 : 1,798.29 = 1,121.40 : x
  2. Step 2: Convert to fraction form
    1,194.30/1,798.29 = 1,121.40/x
  3. Step 3: Cross multiply
    1,194.30x = 1,798.29 × 1,121.40
  4. Step 4: Simplify right side
    1,194.30x = 2,016,602.41
  5. Step 5: Solve for x
    x = 2,016,602.41/1,194.30
  6. Step 6: Final answer
    x = 1,688.52

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.