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Finding the Fourth Proportional to 8,783.30, 13,171.90 and 6,310.78

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Solution

The fourth proportional to 8,783.30, 13,171.90 and 6,310.78 is: 9,463.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,783.30 : 13,171.90 = 6,310.78 : x
  2. Step 2: Convert to fraction form
    8,783.30/13,171.90 = 6,310.78/x
  3. Step 3: Cross multiply
    8,783.30x = 13,171.90 × 6,310.78
  4. Step 4: Simplify right side
    8,783.30x = 83,124,963.08
  5. Step 5: Solve for x
    x = 83,124,963.08/8,783.30
  6. Step 6: Final answer
    x = 9,463.98

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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.