Home / 3,315.61-4,971.81-1,929.25

Finding the Fourth Proportional to 3,315.61, 4,971.81 and 1,929.25

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Solution

The fourth proportional to 3,315.61, 4,971.81 and 1,929.25 is: 2,892.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,315.61 : 4,971.81 = 1,929.25 : x
  2. Step 2: Convert to fraction form
    3,315.61/4,971.81 = 1,929.25/x
  3. Step 3: Cross multiply
    3,315.61x = 4,971.81 × 1,929.25
  4. Step 4: Simplify right side
    3,315.61x = 9,591,881.70
  5. Step 5: Solve for x
    x = 9,591,881.70/3,315.61
  6. Step 6: Final answer
    x = 2,892.95

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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.