Home / 5,419.28-8,129.31-2,648.26

Finding the Fourth Proportional to 5,419.28, 8,129.31 and 2,648.26

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Solution

The fourth proportional to 5,419.28, 8,129.31 and 2,648.26 is: 3,972.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,419.28 : 8,129.31 = 2,648.26 : x
  2. Step 2: Convert to fraction form
    5,419.28/8,129.31 = 2,648.26/x
  3. Step 3: Cross multiply
    5,419.28x = 8,129.31 × 2,648.26
  4. Step 4: Simplify right side
    5,419.28x = 21,528,526.50
  5. Step 5: Solve for x
    x = 21,528,526.50/5,419.28
  6. Step 6: Final answer
    x = 3,972.58

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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.