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Finding the Fourth Proportional to 6,617.74, 9,129.57 and 4,099.18

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Solution

The fourth proportional to 6,617.74, 9,129.57 and 4,099.18 is: 5,655.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,617.74 : 9,129.57 = 4,099.18 : x
  2. Step 2: Convert to fraction form
    6,617.74/9,129.57 = 4,099.18/x
  3. Step 3: Cross multiply
    6,617.74x = 9,129.57 × 4,099.18
  4. Step 4: Simplify right side
    6,617.74x = 37,423,750.75
  5. Step 5: Solve for x
    x = 37,423,750.75/6,617.74
  6. Step 6: Final answer
    x = 5,655.07

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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.