Home / 4,089.76-6,129.52-3,220.64

Finding the Fourth Proportional to 4,089.76, 6,129.52 and 3,220.64

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Solution

The fourth proportional to 4,089.76, 6,129.52 and 3,220.64 is: 4,826.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,089.76 : 6,129.52 = 3,220.64 : x
  2. Step 2: Convert to fraction form
    4,089.76/6,129.52 = 3,220.64/x
  3. Step 3: Cross multiply
    4,089.76x = 6,129.52 × 3,220.64
  4. Step 4: Simplify right side
    4,089.76x = 19,740,977.29
  5. Step 5: Solve for x
    x = 19,740,977.29/4,089.76
  6. Step 6: Final answer
    x = 4,826.93

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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.