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Finding the Fourth Proportional to 8,435.47, 11,640.86 and 4,658.79

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Solution

The fourth proportional to 8,435.47, 11,640.86 and 4,658.79 is: 6,429.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,435.47 : 11,640.86 = 4,658.79 : x
  2. Step 2: Convert to fraction form
    8,435.47/11,640.86 = 4,658.79/x
  3. Step 3: Cross multiply
    8,435.47x = 11,640.86 × 4,658.79
  4. Step 4: Simplify right side
    8,435.47x = 54,232,322.16
  5. Step 5: Solve for x
    x = 54,232,322.16/8,435.47
  6. Step 6: Final answer
    x = 6,429.08

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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.