Home / 3,710.06-5,120.45-2,116.70

Finding the Fourth Proportional to 3,710.06, 5,120.45 and 2,116.70

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Solution

The fourth proportional to 3,710.06, 5,120.45 and 2,116.70 is: 2,921.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,710.06 : 5,120.45 = 2,116.70 : x
  2. Step 2: Convert to fraction form
    3,710.06/5,120.45 = 2,116.70/x
  3. Step 3: Cross multiply
    3,710.06x = 5,120.45 × 2,116.70
  4. Step 4: Simplify right side
    3,710.06x = 10,838,445.93
  5. Step 5: Solve for x
    x = 10,838,445.93/3,710.06
  6. Step 6: Final answer
    x = 2,921.37

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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.