Home / 2,639.42-3,957.65-1,080.51

Finding the Fourth Proportional to 2,639.42, 3,957.65 and 1,080.51

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Solution

The fourth proportional to 2,639.42, 3,957.65 and 1,080.51 is: 1,620.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,639.42 : 3,957.65 = 1,080.51 : x
  2. Step 2: Convert to fraction form
    2,639.42/3,957.65 = 1,080.51/x
  3. Step 3: Cross multiply
    2,639.42x = 3,957.65 × 1,080.51
  4. Step 4: Simplify right side
    2,639.42x = 4,276,283.10
  5. Step 5: Solve for x
    x = 4,276,283.10/2,639.42
  6. Step 6: Final answer
    x = 1,620.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.