Home / 3,710.37-5,121.45-2,139.51

Finding the Fourth Proportional to 3,710.37, 5,121.45 and 2,139.51

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Solution

The fourth proportional to 3,710.37, 5,121.45 and 2,139.51 is: 2,953.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,710.37 : 5,121.45 = 2,139.51 : x
  2. Step 2: Convert to fraction form
    3,710.37/5,121.45 = 2,139.51/x
  3. Step 3: Cross multiply
    3,710.37x = 5,121.45 × 2,139.51
  4. Step 4: Simplify right side
    3,710.37x = 10,957,393.49
  5. Step 5: Solve for x
    x = 10,957,393.49/3,710.37
  6. Step 6: Final answer
    x = 2,953.18

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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.