Home / 7,639.29-11,459.52-3,479.43

Finding the Fourth Proportional to 7,639.29, 11,459.52 and 3,479.43

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Solution

The fourth proportional to 7,639.29, 11,459.52 and 3,479.43 is: 5,219.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,639.29 : 11,459.52 = 3,479.43 : x
  2. Step 2: Convert to fraction form
    7,639.29/11,459.52 = 3,479.43/x
  3. Step 3: Cross multiply
    7,639.29x = 11,459.52 × 3,479.43
  4. Step 4: Simplify right side
    7,639.29x = 39,872,597.67
  5. Step 5: Solve for x
    x = 39,872,597.67/7,639.29
  6. Step 6: Final answer
    x = 5,219.41

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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.