Home / 5,187.81-7,158.56-2,949.69

Finding the Fourth Proportional to 5,187.81, 7,158.56 and 2,949.69

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Solution

The fourth proportional to 5,187.81, 7,158.56 and 2,949.69 is: 4,070.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,187.81 : 7,158.56 = 2,949.69 : x
  2. Step 2: Convert to fraction form
    5,187.81/7,158.56 = 2,949.69/x
  3. Step 3: Cross multiply
    5,187.81x = 7,158.56 × 2,949.69
  4. Step 4: Simplify right side
    5,187.81x = 21,115,518.10
  5. Step 5: Solve for x
    x = 21,115,518.10/5,187.81
  6. Step 6: Final answer
    x = 4,070.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.