Home / 5,129.32-7,686.95-2,786.26

Finding the Fourth Proportional to 5,129.32, 7,686.95 and 2,786.26

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Solution

The fourth proportional to 5,129.32, 7,686.95 and 2,786.26 is: 4,175.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,129.32 : 7,686.95 = 2,786.26 : x
  2. Step 2: Convert to fraction form
    5,129.32/7,686.95 = 2,786.26/x
  3. Step 3: Cross multiply
    5,129.32x = 7,686.95 × 2,786.26
  4. Step 4: Simplify right side
    5,129.32x = 21,417,809.84
  5. Step 5: Solve for x
    x = 21,417,809.84/5,129.32
  6. Step 6: Final answer
    x = 4,175.57

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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.