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Finding the Fourth Proportional to 8,637.68, 11,918.93 and 5,449.77

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Solution

The fourth proportional to 8,637.68, 11,918.93 and 5,449.77 is: 7,520.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,637.68 : 11,918.93 = 5,449.77 : x
  2. Step 2: Convert to fraction form
    8,637.68/11,918.93 = 5,449.77/x
  3. Step 3: Cross multiply
    8,637.68x = 11,918.93 × 5,449.77
  4. Step 4: Simplify right side
    8,637.68x = 64,955,408.20
  5. Step 5: Solve for x
    x = 64,955,408.20/8,637.68
  6. Step 6: Final answer
    x = 7,520.01

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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.