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Finding the Fourth Proportional to 8,793.96, 12,130.06 and 6,140.40

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Solution

The fourth proportional to 8,793.96, 12,130.06 and 6,140.40 is: 8,469.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,793.96 : 12,130.06 = 6,140.40 : x
  2. Step 2: Convert to fraction form
    8,793.96/12,130.06 = 6,140.40/x
  3. Step 3: Cross multiply
    8,793.96x = 12,130.06 × 6,140.40
  4. Step 4: Simplify right side
    8,793.96x = 74,483,420.42
  5. Step 5: Solve for x
    x = 74,483,420.42/8,793.96
  6. Step 6: Final answer
    x = 8,469.84

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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.