Home / 3,421.71-4,721.58-1,929.87

Finding the Fourth Proportional to 3,421.71, 4,721.58 and 1,929.87

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Solution

The fourth proportional to 3,421.71, 4,721.58 and 1,929.87 is: 2,663.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,421.71 : 4,721.58 = 1,929.87 : x
  2. Step 2: Convert to fraction form
    3,421.71/4,721.58 = 1,929.87/x
  3. Step 3: Cross multiply
    3,421.71x = 4,721.58 × 1,929.87
  4. Step 4: Simplify right side
    3,421.71x = 9,112,035.59
  5. Step 5: Solve for x
    x = 9,112,035.59/3,421.71
  6. Step 6: Final answer
    x = 2,663.01

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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.