Home / 8,976.10-13,455.63-3,131.14

Finding the Fourth Proportional to 8,976.10, 13,455.63 and 3,131.14

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Solution

The fourth proportional to 8,976.10, 13,455.63 and 3,131.14 is: 4,693.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,976.10 : 13,455.63 = 3,131.14 : x
  2. Step 2: Convert to fraction form
    8,976.10/13,455.63 = 3,131.14/x
  3. Step 3: Cross multiply
    8,976.10x = 13,455.63 × 3,131.14
  4. Step 4: Simplify right side
    8,976.10x = 42,131,461.32
  5. Step 5: Solve for x
    x = 42,131,461.32/8,976.10
  6. Step 6: Final answer
    x = 4,693.74

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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.