Home / 5,315.44-7,967.95-1,981.25

Finding the Fourth Proportional to 5,315.44, 7,967.95 and 1,981.25

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Solution

The fourth proportional to 5,315.44, 7,967.95 and 1,981.25 is: 2,969.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,315.44 : 7,967.95 = 1,981.25 : x
  2. Step 2: Convert to fraction form
    5,315.44/7,967.95 = 1,981.25/x
  3. Step 3: Cross multiply
    5,315.44x = 7,967.95 × 1,981.25
  4. Step 4: Simplify right side
    5,315.44x = 15,786,451.19
  5. Step 5: Solve for x
    x = 15,786,451.19/5,315.44
  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.