Home / 7,772.36-11,655.72-3,388.76

Finding the Fourth Proportional to 7,772.36, 11,655.72 and 3,388.76

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Solution

The fourth proportional to 7,772.36, 11,655.72 and 3,388.76 is: 5,081.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,772.36 : 11,655.72 = 3,388.76 : x
  2. Step 2: Convert to fraction form
    7,772.36/11,655.72 = 3,388.76/x
  3. Step 3: Cross multiply
    7,772.36x = 11,655.72 × 3,388.76
  4. Step 4: Simplify right side
    7,772.36x = 39,498,437.71
  5. Step 5: Solve for x
    x = 39,498,437.71/7,772.36
  6. Step 6: Final answer
    x = 5,081.91

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1.5x scale

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.