Home / 3,730.80-5,146.40-2,157.76

Finding the Fourth Proportional to 3,730.80, 5,146.40 and 2,157.76

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Solution

The fourth proportional to 3,730.80, 5,146.40 and 2,157.76 is: 2,976.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,730.80 : 5,146.40 = 2,157.76 : x
  2. Step 2: Convert to fraction form
    3,730.80/5,146.40 = 2,157.76/x
  3. Step 3: Cross multiply
    3,730.80x = 5,146.40 × 2,157.76
  4. Step 4: Simplify right side
    3,730.80x = 11,104,696.06
  5. Step 5: Solve for x
    x = 11,104,696.06/3,730.80
  6. Step 6: Final answer
    x = 2,976.49

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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.