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Finding the Fourth Proportional to 6,618.66, 9,133.59 and 4,260.81

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Solution

The fourth proportional to 6,618.66, 9,133.59 and 4,260.81 is: 5,879.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,618.66 : 9,133.59 = 4,260.81 : x
  2. Step 2: Convert to fraction form
    6,618.66/9,133.59 = 4,260.81/x
  3. Step 3: Cross multiply
    6,618.66x = 9,133.59 × 4,260.81
  4. Step 4: Simplify right side
    6,618.66x = 38,916,491.61
  5. Step 5: Solve for x
    x = 38,916,491.61/6,618.66
  6. Step 6: Final answer
    x = 5,879.81

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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.