Home / 1,661.40-2,492.19-1,197.90

Finding the Fourth Proportional to 1,661.40, 2,492.19 and 1,197.90

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Solution

The fourth proportional to 1,661.40, 2,492.19 and 1,197.90 is: 1,796.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,661.40 : 2,492.19 = 1,197.90 : x
  2. Step 2: Convert to fraction form
    1,661.40/2,492.19 = 1,197.90/x
  3. Step 3: Cross multiply
    1,661.40x = 2,492.19 × 1,197.90
  4. Step 4: Simplify right side
    1,661.40x = 2,985,394.40
  5. Step 5: Solve for x
    x = 2,985,394.40/1,661.40
  6. Step 6: Final answer
    x = 1,796.91

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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.