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Finding the Fourth Proportional to 8,646.70, 12,951.42 and 5,858.07

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Solution

The fourth proportional to 8,646.70, 12,951.42 and 5,858.07 is: 8,774.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,646.70 : 12,951.42 = 5,858.07 : x
  2. Step 2: Convert to fraction form
    8,646.70/12,951.42 = 5,858.07/x
  3. Step 3: Cross multiply
    8,646.70x = 12,951.42 × 5,858.07
  4. Step 4: Simplify right side
    8,646.70x = 75,870,302.99
  5. Step 5: Solve for x
    x = 75,870,302.99/8,646.70
  6. Step 6: Final answer
    x = 8,774.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.