Home / 7,772.31-11,663.93-5,309.51

Finding the Fourth Proportional to 7,772.31, 11,663.93 and 5,309.51

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Solution

The fourth proportional to 7,772.31, 11,663.93 and 5,309.51 is: 7,967.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,772.31 : 11,663.93 = 5,309.51 : x
  2. Step 2: Convert to fraction form
    7,772.31/11,663.93 = 5,309.51/x
  3. Step 3: Cross multiply
    7,772.31x = 11,663.93 × 5,309.51
  4. Step 4: Simplify right side
    7,772.31x = 61,929,707.93
  5. Step 5: Solve for x
    x = 61,929,707.93/7,772.31
  6. Step 6: Final answer
    x = 7,967.99

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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.