Home / 5,131.19-7,690.71-2,355.52

Finding the Fourth Proportional to 5,131.19, 7,690.71 and 2,355.52

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Solution

The fourth proportional to 5,131.19, 7,690.71 and 2,355.52 is: 3,530.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,131.19 : 7,690.71 = 2,355.52 : x
  2. Step 2: Convert to fraction form
    5,131.19/7,690.71 = 2,355.52/x
  3. Step 3: Cross multiply
    5,131.19x = 7,690.71 × 2,355.52
  4. Step 4: Simplify right side
    5,131.19x = 18,115,621.22
  5. Step 5: Solve for x
    x = 18,115,621.22/5,131.19
  6. Step 6: Final answer
    x = 3,530.49

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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.