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Finding the Fourth Proportional to 6,616.44, 9,128.81 and 4,259.94

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Solution

The fourth proportional to 6,616.44, 9,128.81 and 4,259.94 is: 5,877.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,616.44 : 9,128.81 = 4,259.94 : x
  2. Step 2: Convert to fraction form
    6,616.44/9,128.81 = 4,259.94/x
  3. Step 3: Cross multiply
    6,616.44x = 9,128.81 × 4,259.94
  4. Step 4: Simplify right side
    6,616.44x = 38,888,182.87
  5. Step 5: Solve for x
    x = 38,888,182.87/6,616.44
  6. Step 6: Final answer
    x = 5,877.51

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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.