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Finding the Fourth Proportional to 3,989.16, 5,985.72 and 2,602.08

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Solution

The fourth proportional to 3,989.16, 5,985.72 and 2,602.08 is: 3,904.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,989.16 : 5,985.72 = 2,602.08 : x
  2. Step 2: Convert to fraction form
    3,989.16/5,985.72 = 2,602.08/x
  3. Step 3: Cross multiply
    3,989.16x = 5,985.72 × 2,602.08
  4. Step 4: Simplify right side
    3,989.16x = 15,575,322.30
  5. Step 5: Solve for x
    x = 15,575,322.30/3,989.16
  6. Step 6: Final answer
    x = 3,904.41

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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.