Home / 5,422.02-8,128.70-2,134.50

Finding the Fourth Proportional to 5,422.02, 8,128.70 and 2,134.50

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Solution

The fourth proportional to 5,422.02, 8,128.70 and 2,134.50 is: 3,200.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,422.02 : 8,128.70 = 2,134.50 : x
  2. Step 2: Convert to fraction form
    5,422.02/8,128.70 = 2,134.50/x
  3. Step 3: Cross multiply
    5,422.02x = 8,128.70 × 2,134.50
  4. Step 4: Simplify right side
    5,422.02x = 17,350,710.15
  5. Step 5: Solve for x
    x = 17,350,710.15/5,422.02
  6. Step 6: Final answer
    x = 3,200.05

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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.