Home / 5,315.54-7,970.36-2,150.12

Finding the Fourth Proportional to 5,315.54, 7,970.36 and 2,150.12

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Solution

The fourth proportional to 5,315.54, 7,970.36 and 2,150.12 is: 3,223.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,315.54 : 7,970.36 = 2,150.12 : x
  2. Step 2: Convert to fraction form
    5,315.54/7,970.36 = 2,150.12/x
  3. Step 3: Cross multiply
    5,315.54x = 7,970.36 × 2,150.12
  4. Step 4: Simplify right side
    5,315.54x = 17,137,179.84
  5. Step 5: Solve for x
    x = 17,137,179.84/5,315.54
  6. Step 6: Final answer
    x = 3,223.98

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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.