Home / 5,390.83-8,080.76-4,089.56

Finding the Fourth Proportional to 5,390.83, 8,080.76 and 4,089.56

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Solution

The fourth proportional to 5,390.83, 8,080.76 and 4,089.56 is: 6,130.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,390.83 : 8,080.76 = 4,089.56 : x
  2. Step 2: Convert to fraction form
    5,390.83/8,080.76 = 4,089.56/x
  3. Step 3: Cross multiply
    5,390.83x = 8,080.76 × 4,089.56
  4. Step 4: Simplify right side
    5,390.83x = 33,046,783.29
  5. Step 5: Solve for x
    x = 33,046,783.29/5,390.83
  6. Step 6: Final answer
    x = 6,130.19

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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.