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Finding the Fourth Proportional to 7,878.17, 10,867.06 and 4,689.33

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Solution

The fourth proportional to 7,878.17, 10,867.06 and 4,689.33 is: 6,468.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,878.17 : 10,867.06 = 4,689.33 : x
  2. Step 2: Convert to fraction form
    7,878.17/10,867.06 = 4,689.33/x
  3. Step 3: Cross multiply
    7,878.17x = 10,867.06 × 4,689.33
  4. Step 4: Simplify right side
    7,878.17x = 50,959,230.47
  5. Step 5: Solve for x
    x = 50,959,230.47/7,878.17
  6. Step 6: Final answer
    x = 6,468.41

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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.