Home / 3,931.13-5,898.52-1,981.06

Finding the Fourth Proportional to 3,931.13, 5,898.52 and 1,981.06

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Solution

The fourth proportional to 3,931.13, 5,898.52 and 1,981.06 is: 2,972.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,931.13 : 5,898.52 = 1,981.06 : x
  2. Step 2: Convert to fraction form
    3,931.13/5,898.52 = 1,981.06/x
  3. Step 3: Cross multiply
    3,931.13x = 5,898.52 × 1,981.06
  4. Step 4: Simplify right side
    3,931.13x = 11,685,309.76
  5. Step 5: Solve for x
    x = 11,685,309.76/3,931.13
  6. Step 6: Final answer
    x = 2,972.50

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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.