Home / 3,117.03-4,295.01-2,120.58

Finding the Fourth Proportional to 3,117.03, 4,295.01 and 2,120.58

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Solution

The fourth proportional to 3,117.03, 4,295.01 and 2,120.58 is: 2,921.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,117.03 : 4,295.01 = 2,120.58 : x
  2. Step 2: Convert to fraction form
    3,117.03/4,295.01 = 2,120.58/x
  3. Step 3: Cross multiply
    3,117.03x = 4,295.01 × 2,120.58
  4. Step 4: Simplify right side
    3,117.03x = 9,107,912.31
  5. Step 5: Solve for x
    x = 9,107,912.31/3,117.03
  6. Step 6: Final answer
    x = 2,921.98

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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.