Home / 5,101.79-7,648.43-1,981.06

Finding the Fourth Proportional to 5,101.79, 7,648.43 and 1,981.06

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Solution

The fourth proportional to 5,101.79, 7,648.43 and 1,981.06 is: 2,969.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,101.79 : 7,648.43 = 1,981.06 : x
  2. Step 2: Convert to fraction form
    5,101.79/7,648.43 = 1,981.06/x
  3. Step 3: Cross multiply
    5,101.79x = 7,648.43 × 1,981.06
  4. Step 4: Simplify right side
    5,101.79x = 15,151,969.71
  5. Step 5: Solve for x
    x = 15,151,969.71/5,101.79
  6. Step 6: Final answer
    x = 2,969.93

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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.