Home / 8,495.31-11,721.11-5,135.69

Finding the Fourth Proportional to 8,495.31, 11,721.11 and 5,135.69

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Solution

The fourth proportional to 8,495.31, 11,721.11 and 5,135.69 is: 7,085.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,495.31 : 11,721.11 = 5,135.69 : x
  2. Step 2: Convert to fraction form
    8,495.31/11,721.11 = 5,135.69/x
  3. Step 3: Cross multiply
    8,495.31x = 11,721.11 × 5,135.69
  4. Step 4: Simplify right side
    8,495.31x = 60,195,925.11
  5. Step 5: Solve for x
    x = 60,195,925.11/8,495.31
  6. Step 6: Final answer
    x = 7,085.78

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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.