Home / 7,639.65-11,460.08-3,479.79

Finding the Fourth Proportional to 7,639.65, 11,460.08 and 3,479.79

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Solution

The fourth proportional to 7,639.65, 11,460.08 and 3,479.79 is: 5,219.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,639.65 : 11,460.08 = 3,479.79 : x
  2. Step 2: Convert to fraction form
    7,639.65/11,460.08 = 3,479.79/x
  3. Step 3: Cross multiply
    7,639.65x = 11,460.08 × 3,479.79
  4. Step 4: Simplify right side
    7,639.65x = 39,878,723.46
  5. Step 5: Solve for x
    x = 39,878,723.46/7,639.65
  6. Step 6: Final answer
    x = 5,219.97

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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.