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Finding the Fourth Proportional to 6,237.61, 8,606.42 and 3,720.65

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Solution

The fourth proportional to 6,237.61, 8,606.42 and 3,720.65 is: 5,133.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,237.61 : 8,606.42 = 3,720.65 : x
  2. Step 2: Convert to fraction form
    6,237.61/8,606.42 = 3,720.65/x
  3. Step 3: Cross multiply
    6,237.61x = 8,606.42 × 3,720.65
  4. Step 4: Simplify right side
    6,237.61x = 32,021,477.30
  5. Step 5: Solve for x
    x = 32,021,477.30/6,237.61
  6. Step 6: Final answer
    x = 5,133.62

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Double scale
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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.