Home / 5,419.02-8,124.21-2,131.50

Finding the Fourth Proportional to 5,419.02, 8,124.21 and 2,131.50

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Solution

The fourth proportional to 5,419.02, 8,124.21 and 2,131.50 is: 3,195.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,419.02 : 8,124.21 = 2,131.50 : x
  2. Step 2: Convert to fraction form
    5,419.02/8,124.21 = 2,131.50/x
  3. Step 3: Cross multiply
    5,419.02x = 8,124.21 × 2,131.50
  4. Step 4: Simplify right side
    5,419.02x = 17,316,753.62
  5. Step 5: Solve for x
    x = 17,316,753.62/5,419.02
  6. Step 6: Final answer
    x = 3,195.55

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1.5x scale

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.