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Finding the Fourth Proportional to 8,783.42, 13,177.84 and 3,518.42

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Solution

The fourth proportional to 8,783.42, 13,177.84 and 3,518.42 is: 5,278.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,783.42 : 13,177.84 = 3,518.42 : x
  2. Step 2: Convert to fraction form
    8,783.42/13,177.84 = 3,518.42/x
  3. Step 3: Cross multiply
    8,783.42x = 13,177.84 × 3,518.42
  4. Step 4: Simplify right side
    8,783.42x = 46,365,175.81
  5. Step 5: Solve for x
    x = 46,365,175.81/8,783.42
  6. Step 6: Final answer
    x = 5,278.72

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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.