Home / 5,438.40-8,139.48-4,132.56

Finding the Fourth Proportional to 5,438.40, 8,139.48 and 4,132.56

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Solution

The fourth proportional to 5,438.40, 8,139.48 and 4,132.56 is: 6,185.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,438.40 : 8,139.48 = 4,132.56 : x
  2. Step 2: Convert to fraction form
    5,438.40/8,139.48 = 4,132.56/x
  3. Step 3: Cross multiply
    5,438.40x = 8,139.48 × 4,132.56
  4. Step 4: Simplify right side
    5,438.40x = 33,636,889.47
  5. Step 5: Solve for x
    x = 33,636,889.47/5,438.40
  6. Step 6: Final answer
    x = 6,185.07

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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.