Home / 5,615.42-8,428.28-2,655.36

Finding the Fourth Proportional to 5,615.42, 8,428.28 and 2,655.36

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Solution

The fourth proportional to 5,615.42, 8,428.28 and 2,655.36 is: 3,985.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,615.42 : 8,428.28 = 2,655.36 : x
  2. Step 2: Convert to fraction form
    5,615.42/8,428.28 = 2,655.36/x
  3. Step 3: Cross multiply
    5,615.42x = 8,428.28 × 2,655.36
  4. Step 4: Simplify right side
    5,615.42x = 22,380,104.30
  5. Step 5: Solve for x
    x = 22,380,104.30/5,615.42
  6. Step 6: Final answer
    x = 3,985.48

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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.