Home / 1,461.23-2,192.22-639.66

Finding the Fourth Proportional to 1,461.23, 2,192.22 and 639.66

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Solution

The fourth proportional to 1,461.23, 2,192.22 and 639.66 is: 959.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,461.23 : 2,192.22 = 639.66 : x
  2. Step 2: Convert to fraction form
    1,461.23/2,192.22 = 639.66/x
  3. Step 3: Cross multiply
    1,461.23x = 2,192.22 × 639.66
  4. Step 4: Simplify right side
    1,461.23x = 1,402,275.45
  5. Step 5: Solve for x
    x = 1,402,275.45/1,461.23
  6. Step 6: Final answer
    x = 959.66

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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.