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Finding the Fourth Proportional to 6,239.13, 8,609.76 and 3,721.19

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Solution

The fourth proportional to 6,239.13, 8,609.76 and 3,721.19 is: 5,135.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,239.13 : 8,609.76 = 3,721.19 : x
  2. Step 2: Convert to fraction form
    6,239.13/8,609.76 = 3,721.19/x
  3. Step 3: Cross multiply
    6,239.13x = 8,609.76 × 3,721.19
  4. Step 4: Simplify right side
    6,239.13x = 32,038,509.77
  5. Step 5: Solve for x
    x = 32,038,509.77/6,239.13
  6. Step 6: Final answer
    x = 5,135.09

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1.5x scale

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.