Home / 1,194.10-1,647.88-721.98

Finding the Fourth Proportional to 1,194.10, 1,647.88 and 721.98

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Solution

The fourth proportional to 1,194.10, 1,647.88 and 721.98 is: 996.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,194.10 : 1,647.88 = 721.98 : x
  2. Step 2: Convert to fraction form
    1,194.10/1,647.88 = 721.98/x
  3. Step 3: Cross multiply
    1,194.10x = 1,647.88 × 721.98
  4. Step 4: Simplify right side
    1,194.10x = 1,189,736.40
  5. Step 5: Solve for x
    x = 1,189,736.40/1,194.10
  6. Step 6: Final answer
    x = 996.35

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1.5x scale

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.