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Finding the Fourth Proportional to 8,637.92, 12,938.66 and 8,539.51

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Solution

The fourth proportional to 8,637.92, 12,938.66 and 8,539.51 is: 12,791.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,637.92 : 12,938.66 = 8,539.51 : x
  2. Step 2: Convert to fraction form
    8,637.92/12,938.66 = 8,539.51/x
  3. Step 3: Cross multiply
    8,637.92x = 12,938.66 × 8,539.51
  4. Step 4: Simplify right side
    8,637.92x = 110,489,709.07
  5. Step 5: Solve for x
    x = 110,489,709.07/8,637.92
  6. Step 6: Final answer
    x = 12,791.24

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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.