Home / 5,209.16-7,187.78-2,971.08

Finding the Fourth Proportional to 5,209.16, 7,187.78 and 2,971.08

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Solution

The fourth proportional to 5,209.16, 7,187.78 and 2,971.08 is: 4,099.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,209.16 : 7,187.78 = 2,971.08 : x
  2. Step 2: Convert to fraction form
    5,209.16/7,187.78 = 2,971.08/x
  3. Step 3: Cross multiply
    5,209.16x = 7,187.78 × 2,971.08
  4. Step 4: Simplify right side
    5,209.16x = 21,355,476.83
  5. Step 5: Solve for x
    x = 21,355,476.83/5,209.16
  6. Step 6: Final answer
    x = 4,099.60

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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.