Home / 8,665.63-11,959.38-5,129.37

Finding the Fourth Proportional to 8,665.63, 11,959.38 and 5,129.37

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Solution

The fourth proportional to 8,665.63, 11,959.38 and 5,129.37 is: 7,079.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,665.63 : 11,959.38 = 5,129.37 : x
  2. Step 2: Convert to fraction form
    8,665.63/11,959.38 = 5,129.37/x
  3. Step 3: Cross multiply
    8,665.63x = 11,959.38 × 5,129.37
  4. Step 4: Simplify right side
    8,665.63x = 61,344,084.99
  5. Step 5: Solve for x
    x = 61,344,084.99/8,665.63
  6. Step 6: Final answer
    x = 7,079.01

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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.