Home / 1,136.11-1,574.53-1,118.83

Finding the Fourth Proportional to 1,136.11, 1,574.53 and 1,118.83

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Solution

The fourth proportional to 1,136.11, 1,574.53 and 1,118.83 is: 1,550.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,136.11 : 1,574.53 = 1,118.83 : x
  2. Step 2: Convert to fraction form
    1,136.11/1,574.53 = 1,118.83/x
  3. Step 3: Cross multiply
    1,136.11x = 1,574.53 × 1,118.83
  4. Step 4: Simplify right side
    1,136.11x = 1,761,631.40
  5. Step 5: Solve for x
    x = 1,761,631.40/1,136.11
  6. Step 6: Final answer
    x = 1,550.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.