Home / 1,351.17-2,026.80-485.46

Finding the Fourth Proportional to 1,351.17, 2,026.80 and 485.46

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Solution

The fourth proportional to 1,351.17, 2,026.80 and 485.46 is: 728.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,351.17 : 2,026.80 = 485.46 : x
  2. Step 2: Convert to fraction form
    1,351.17/2,026.80 = 485.46/x
  3. Step 3: Cross multiply
    1,351.17x = 2,026.80 × 485.46
  4. Step 4: Simplify right side
    1,351.17x = 983,930.33
  5. Step 5: Solve for x
    x = 983,930.33/1,351.17
  6. Step 6: Final answer
    x = 728.21

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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.