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Finding the Fourth Proportional to 6,278.88, 8,664.88 and 3,484.40

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Solution

The fourth proportional to 6,278.88, 8,664.88 and 3,484.40 is: 4,808.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,278.88 : 8,664.88 = 3,484.40 : x
  2. Step 2: Convert to fraction form
    6,278.88/8,664.88 = 3,484.40/x
  3. Step 3: Cross multiply
    6,278.88x = 8,664.88 × 3,484.40
  4. Step 4: Simplify right side
    6,278.88x = 30,191,907.87
  5. Step 5: Solve for x
    x = 30,191,907.87/6,278.88
  6. Step 6: Final answer
    x = 4,808.49

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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.