Home / 1,187.19-1,777.95-1,012.91

Finding the Fourth Proportional to 1,187.19, 1,777.95 and 1,012.91

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Solution

The fourth proportional to 1,187.19, 1,777.95 and 1,012.91 is: 1,516.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187.19 : 1,777.95 = 1,012.91 : x
  2. Step 2: Convert to fraction form
    1,187.19/1,777.95 = 1,012.91/x
  3. Step 3: Cross multiply
    1,187.19x = 1,777.95 × 1,012.91
  4. Step 4: Simplify right side
    1,187.19x = 1,800,894.44
  5. Step 5: Solve for x
    x = 1,800,894.44/1,187.19
  6. Step 6: Final answer
    x = 1,516.94

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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.