Home / 3,147.18-4,342.94-1,730.84

Finding the Fourth Proportional to 3,147.18, 4,342.94 and 1,730.84

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Solution

The fourth proportional to 3,147.18, 4,342.94 and 1,730.84 is: 2,388.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,147.18 : 4,342.94 = 1,730.84 : x
  2. Step 2: Convert to fraction form
    3,147.18/4,342.94 = 1,730.84/x
  3. Step 3: Cross multiply
    3,147.18x = 4,342.94 × 1,730.84
  4. Step 4: Simplify right side
    3,147.18x = 7,516,934.27
  5. Step 5: Solve for x
    x = 7,516,934.27/3,147.18
  6. Step 6: Final answer
    x = 2,388.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.