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Finding the Fourth Proportional to 8,571.69, 12,840.93 and 4,862.70

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Solution

The fourth proportional to 8,571.69, 12,840.93 and 4,862.70 is: 7,284.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,571.69 : 12,840.93 = 4,862.70 : x
  2. Step 2: Convert to fraction form
    8,571.69/12,840.93 = 4,862.70/x
  3. Step 3: Cross multiply
    8,571.69x = 12,840.93 × 4,862.70
  4. Step 4: Simplify right side
    8,571.69x = 62,441,590.31
  5. Step 5: Solve for x
    x = 62,441,590.31/8,571.69
  6. Step 6: Final answer
    x = 7,284.63

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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.