Home / 8,485.76-11,710.69-5,127.91

Finding the Fourth Proportional to 8,485.76, 11,710.69 and 5,127.91

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Solution

The fourth proportional to 8,485.76, 11,710.69 and 5,127.91 is: 7,076.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,485.76 : 11,710.69 = 5,127.91 : x
  2. Step 2: Convert to fraction form
    8,485.76/11,710.69 = 5,127.91/x
  3. Step 3: Cross multiply
    8,485.76x = 11,710.69 × 5,127.91
  4. Step 4: Simplify right side
    8,485.76x = 60,051,322.26
  5. Step 5: Solve for x
    x = 60,051,322.26/8,485.76
  6. Step 6: Final answer
    x = 7,076.71

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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.