Home / 3,147.15-4,724.37-1,689.15

Finding the Fourth Proportional to 3,147.15, 4,724.37 and 1,689.15

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Solution

The fourth proportional to 3,147.15, 4,724.37 and 1,689.15 is: 2,535.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,147.15 : 4,724.37 = 1,689.15 : x
  2. Step 2: Convert to fraction form
    3,147.15/4,724.37 = 1,689.15/x
  3. Step 3: Cross multiply
    3,147.15x = 4,724.37 × 1,689.15
  4. Step 4: Simplify right side
    3,147.15x = 7,980,169.59
  5. Step 5: Solve for x
    x = 7,980,169.59/3,147.15
  6. Step 6: Final answer
    x = 2,535.68

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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.