Home / 3,660.19-5,051.05-1,981.58

Finding the Fourth Proportional to 3,660.19, 5,051.05 and 1,981.58

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Solution

The fourth proportional to 3,660.19, 5,051.05 and 1,981.58 is: 2,734.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,660.19 : 5,051.05 = 1,981.58 : x
  2. Step 2: Convert to fraction form
    3,660.19/5,051.05 = 1,981.58/x
  3. Step 3: Cross multiply
    3,660.19x = 5,051.05 × 1,981.58
  4. Step 4: Simplify right side
    3,660.19x = 10,009,029.45
  5. Step 5: Solve for x
    x = 10,009,029.45/3,660.19
  6. Step 6: Final answer
    x = 2,734.57

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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.