Home / 1,957.19-2,935.17-640.64

Finding the Fourth Proportional to 1,957.19, 2,935.17 and 640.64

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Solution

The fourth proportional to 1,957.19, 2,935.17 and 640.64 is: 960.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,957.19 : 2,935.17 = 640.64 : x
  2. Step 2: Convert to fraction form
    1,957.19/2,935.17 = 640.64/x
  3. Step 3: Cross multiply
    1,957.19x = 2,935.17 × 640.64
  4. Step 4: Simplify right side
    1,957.19x = 1,880,387.31
  5. Step 5: Solve for x
    x = 1,880,387.31/1,957.19
  6. Step 6: Final answer
    x = 960.76

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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.