Home / 1,461.15-2,192.89-640.00

Finding the Fourth Proportional to 1,461.15, 2,192.89 and 640.00

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Solution

The fourth proportional to 1,461.15, 2,192.89 and 640.00 is: 960.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,461.15 : 2,192.89 = 640.00 : x
  2. Step 2: Convert to fraction form
    1,461.15/2,192.89 = 640.00/x
  3. Step 3: Cross multiply
    1,461.15x = 2,192.89 × 640.00
  4. Step 4: Simplify right side
    1,461.15x = 1,403,449.24
  5. Step 5: Solve for x
    x = 1,403,449.24/1,461.15
  6. Step 6: Final answer
    x = 960.51

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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.