Home / 3,421.91-4,722.14-1,929.81

Finding the Fourth Proportional to 3,421.91, 4,722.14 and 1,929.81

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Solution

The fourth proportional to 3,421.91, 4,722.14 and 1,929.81 is: 2,663.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,421.91 : 4,722.14 = 1,929.81 : x
  2. Step 2: Convert to fraction form
    3,421.91/4,722.14 = 1,929.81/x
  3. Step 3: Cross multiply
    3,421.91x = 4,722.14 × 1,929.81
  4. Step 4: Simplify right side
    3,421.91x = 9,112,823.34
  5. Step 5: Solve for x
    x = 9,112,823.34/3,421.91
  6. Step 6: Final answer
    x = 2,663.08

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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.