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Finding the Fourth Proportional to 8,647.90, 11,935.00 and 5,292.95

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Solution

The fourth proportional to 8,647.90, 11,935.00 and 5,292.95 is: 7,304.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,647.90 : 11,935.00 = 5,292.95 : x
  2. Step 2: Convert to fraction form
    8,647.90/11,935.00 = 5,292.95/x
  3. Step 3: Cross multiply
    8,647.90x = 11,935.00 × 5,292.95
  4. Step 4: Simplify right side
    8,647.90x = 63,171,285.34
  5. Step 5: Solve for x
    x = 63,171,285.34/8,647.90
  6. Step 6: Final answer
    x = 7,304.81

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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.