Home / 5,405.45-8,109.02-2,285.47

Finding the Fourth Proportional to 5,405.45, 8,109.02 and 2,285.47

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Solution

The fourth proportional to 5,405.45, 8,109.02 and 2,285.47 is: 3,428.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,405.45 : 8,109.02 = 2,285.47 : x
  2. Step 2: Convert to fraction form
    5,405.45/8,109.02 = 2,285.47/x
  3. Step 3: Cross multiply
    5,405.45x = 8,109.02 × 2,285.47
  4. Step 4: Simplify right side
    5,405.45x = 18,532,890.24
  5. Step 5: Solve for x
    x = 18,532,890.24/5,405.45
  6. Step 6: Final answer
    x = 3,428.55

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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.