Home / 7,021.30-10,531.35-2,861.74

Finding the Fourth Proportional to 7,021.30, 10,531.35 and 2,861.74

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Solution

The fourth proportional to 7,021.30, 10,531.35 and 2,861.74 is: 4,292.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,021.30 : 10,531.35 = 2,861.74 : x
  2. Step 2: Convert to fraction form
    7,021.30/10,531.35 = 2,861.74/x
  3. Step 3: Cross multiply
    7,021.30x = 10,531.35 × 2,861.74
  4. Step 4: Simplify right side
    7,021.30x = 30,137,985.55
  5. Step 5: Solve for x
    x = 30,137,985.55/7,021.30
  6. Step 6: Final answer
    x = 4,292.37

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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.