Home / 5,207.90-7,807.08-2,087.37

Finding the Fourth Proportional to 5,207.90, 7,807.08 and 2,087.37

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Solution

The fourth proportional to 5,207.90, 7,807.08 and 2,087.37 is: 3,129.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,207.90 : 7,807.08 = 2,087.37 : x
  2. Step 2: Convert to fraction form
    5,207.90/7,807.08 = 2,087.37/x
  3. Step 3: Cross multiply
    5,207.90x = 7,807.08 × 2,087.37
  4. Step 4: Simplify right side
    5,207.90x = 16,296,272.41
  5. Step 5: Solve for x
    x = 16,296,272.41/5,207.90
  6. Step 6: Final answer
    x = 3,129.15

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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.