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Finding the Fourth Proportional to 8,640.45, 12,944.06 and 5,298.96

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Solution

The fourth proportional to 8,640.45, 12,944.06 and 5,298.96 is: 7,938.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,640.45 : 12,944.06 = 5,298.96 : x
  2. Step 2: Convert to fraction form
    8,640.45/12,944.06 = 5,298.96/x
  3. Step 3: Cross multiply
    8,640.45x = 12,944.06 × 5,298.96
  4. Step 4: Simplify right side
    8,640.45x = 68,590,010.81
  5. Step 5: Solve for x
    x = 68,590,010.81/8,640.45
  6. Step 6: Final answer
    x = 7,938.24

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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.