Home / 1,207.15-1,808.83-719.93

Finding the Fourth Proportional to 1,207.15, 1,808.83 and 719.93

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Solution

The fourth proportional to 1,207.15, 1,808.83 and 719.93 is: 1,078.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,207.15 : 1,808.83 = 719.93 : x
  2. Step 2: Convert to fraction form
    1,207.15/1,808.83 = 719.93/x
  3. Step 3: Cross multiply
    1,207.15x = 1,808.83 × 719.93
  4. Step 4: Simplify right side
    1,207.15x = 1,302,230.98
  5. Step 5: Solve for x
    x = 1,302,230.98/1,207.15
  6. Step 6: Final answer
    x = 1,078.76

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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.