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Finding the Fourth Proportional to 6,640.32, 9,933.12 and 5,900.40

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Solution

The fourth proportional to 6,640.32, 9,933.12 and 5,900.40 is: 8,826.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,640.32 : 9,933.12 = 5,900.40 : x
  2. Step 2: Convert to fraction form
    6,640.32/9,933.12 = 5,900.40/x
  3. Step 3: Cross multiply
    6,640.32x = 9,933.12 × 5,900.40
  4. Step 4: Simplify right side
    6,640.32x = 58,609,381.25
  5. Step 5: Solve for x
    x = 58,609,381.25/6,640.32
  6. Step 6: Final answer
    x = 8,826.29

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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.