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Finding the Fourth Proportional to 6,642.42, 9,164.66 and 4,285.93

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Solution

The fourth proportional to 6,642.42, 9,164.66 and 4,285.93 is: 5,913.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,642.42 : 9,164.66 = 4,285.93 : x
  2. Step 2: Convert to fraction form
    6,642.42/9,164.66 = 4,285.93/x
  3. Step 3: Cross multiply
    6,642.42x = 9,164.66 × 4,285.93
  4. Step 4: Simplify right side
    6,642.42x = 39,279,046.89
  5. Step 5: Solve for x
    x = 39,279,046.89/6,642.42
  6. Step 6: Final answer
    x = 5,913.36

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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.