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Finding the Fourth Proportional to 8,987.79, 13,476.63 and 3,719.82

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Solution

The fourth proportional to 8,987.79, 13,476.63 and 3,719.82 is: 5,577.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,987.79 : 13,476.63 = 3,719.82 : x
  2. Step 2: Convert to fraction form
    8,987.79/13,476.63 = 3,719.82/x
  3. Step 3: Cross multiply
    8,987.79x = 13,476.63 × 3,719.82
  4. Step 4: Simplify right side
    8,987.79x = 50,130,637.81
  5. Step 5: Solve for x
    x = 50,130,637.81/8,987.79
  6. Step 6: Final answer
    x = 5,577.64

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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.