Home / 8,988.85-13,489.35-3,145.51

Finding the Fourth Proportional to 8,988.85, 13,489.35 and 3,145.51

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Solution

The fourth proportional to 8,988.85, 13,489.35 and 3,145.51 is: 4,720.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,988.85 : 13,489.35 = 3,145.51 : x
  2. Step 2: Convert to fraction form
    8,988.85/13,489.35 = 3,145.51/x
  3. Step 3: Cross multiply
    8,988.85x = 13,489.35 × 3,145.51
  4. Step 4: Simplify right side
    8,988.85x = 42,430,839.80
  5. Step 5: Solve for x
    x = 42,430,839.80/8,988.85
  6. Step 6: Final answer
    x = 4,720.39

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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.