Home / 5,087.90-7,622.28-3,988.93

Finding the Fourth Proportional to 5,087.90, 7,622.28 and 3,988.93

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Solution

The fourth proportional to 5,087.90, 7,622.28 and 3,988.93 is: 5,975.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,087.90 : 7,622.28 = 3,988.93 : x
  2. Step 2: Convert to fraction form
    5,087.90/7,622.28 = 3,988.93/x
  3. Step 3: Cross multiply
    5,087.90x = 7,622.28 × 3,988.93
  4. Step 4: Simplify right side
    5,087.90x = 30,404,741.36
  5. Step 5: Solve for x
    x = 30,404,741.36/5,087.90
  6. Step 6: Final answer
    x = 5,975.89

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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.