Home / 1,395.24-2,091.39-561.96

Finding the Fourth Proportional to 1,395.24, 2,091.39 and 561.96

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Solution

The fourth proportional to 1,395.24, 2,091.39 and 561.96 is: 842.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,395.24 : 2,091.39 = 561.96 : x
  2. Step 2: Convert to fraction form
    1,395.24/2,091.39 = 561.96/x
  3. Step 3: Cross multiply
    1,395.24x = 2,091.39 × 561.96
  4. Step 4: Simplify right side
    1,395.24x = 1,175,277.52
  5. Step 5: Solve for x
    x = 1,175,277.52/1,395.24
  6. Step 6: Final answer
    x = 842.35

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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.