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Finding the Fourth Proportional to 6,987.96, 10,479.15 and 2,827.17

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Solution

The fourth proportional to 6,987.96, 10,479.15 and 2,827.17 is: 4,239.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,987.96 : 10,479.15 = 2,827.17 : x
  2. Step 2: Convert to fraction form
    6,987.96/10,479.15 = 2,827.17/x
  3. Step 3: Cross multiply
    6,987.96x = 10,479.15 × 2,827.17
  4. Step 4: Simplify right side
    6,987.96x = 29,626,338.51
  5. Step 5: Solve for x
    x = 29,626,338.51/6,987.96
  6. Step 6: Final answer
    x = 4,239.63

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1.5x scale

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.