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Finding the Fourth Proportional to 6,418.54, 8,848.73 and 6,278.81

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Solution

The fourth proportional to 6,418.54, 8,848.73 and 6,278.81 is: 8,656.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,418.54 : 8,848.73 = 6,278.81 : x
  2. Step 2: Convert to fraction form
    6,418.54/8,848.73 = 6,278.81/x
  3. Step 3: Cross multiply
    6,418.54x = 8,848.73 × 6,278.81
  4. Step 4: Simplify right side
    6,418.54x = 55,559,463.02
  5. Step 5: Solve for x
    x = 55,559,463.02/6,418.54
  6. Step 6: Final answer
    x = 8,656.10

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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.