Home / 8,135.10-11,231.27-5,153.49

Finding the Fourth Proportional to 8,135.10, 11,231.27 and 5,153.49

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Solution

The fourth proportional to 8,135.10, 11,231.27 and 5,153.49 is: 7,114.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,135.10 : 11,231.27 = 5,153.49 : x
  2. Step 2: Convert to fraction form
    8,135.10/11,231.27 = 5,153.49/x
  3. Step 3: Cross multiply
    8,135.10x = 11,231.27 × 5,153.49
  4. Step 4: Simplify right side
    8,135.10x = 57,880,237.63
  5. Step 5: Solve for x
    x = 57,880,237.63/8,135.10
  6. Step 6: Final answer
    x = 7,114.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.