Home / 5,215.77-7,822.27-1,929.79

Finding the Fourth Proportional to 5,215.77, 7,822.27 and 1,929.79

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Solution

The fourth proportional to 5,215.77, 7,822.27 and 1,929.79 is: 2,894.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,215.77 : 7,822.27 = 1,929.79 : x
  2. Step 2: Convert to fraction form
    5,215.77/7,822.27 = 1,929.79/x
  3. Step 3: Cross multiply
    5,215.77x = 7,822.27 × 1,929.79
  4. Step 4: Simplify right side
    5,215.77x = 15,095,338.42
  5. Step 5: Solve for x
    x = 15,095,338.42/5,215.77
  6. Step 6: Final answer
    x = 2,894.17

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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.