Home / 7,042.20-9,717.30-3,897.96

Finding the Fourth Proportional to 7,042.20, 9,717.30 and 3,897.96

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Solution

The fourth proportional to 7,042.20, 9,717.30 and 3,897.96 is: 5,378.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,042.20 : 9,717.30 = 3,897.96 : x
  2. Step 2: Convert to fraction form
    7,042.20/9,717.30 = 3,897.96/x
  3. Step 3: Cross multiply
    7,042.20x = 9,717.30 × 3,897.96
  4. Step 4: Simplify right side
    7,042.20x = 37,877,646.71
  5. Step 5: Solve for x
    x = 37,877,646.71/7,042.20
  6. Step 6: Final answer
    x = 5,378.67

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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.