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Finding the Fourth Proportional to 8,665.94, 12,971.95 and 4,707.30

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Solution

The fourth proportional to 8,665.94, 12,971.95 and 4,707.30 is: 7,046.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,665.94 : 12,971.95 = 4,707.30 : x
  2. Step 2: Convert to fraction form
    8,665.94/12,971.95 = 4,707.30/x
  3. Step 3: Cross multiply
    8,665.94x = 12,971.95 × 4,707.30
  4. Step 4: Simplify right side
    8,665.94x = 61,062,860.24
  5. Step 5: Solve for x
    x = 61,062,860.24/8,665.94
  6. Step 6: Final answer
    x = 7,046.31

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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.