Home / 1,400.27-2,100.53-620.17

Finding the Fourth Proportional to 1,400.27, 2,100.53 and 620.17

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Solution

The fourth proportional to 1,400.27, 2,100.53 and 620.17 is: 930.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,400.27 : 2,100.53 = 620.17 : x
  2. Step 2: Convert to fraction form
    1,400.27/2,100.53 = 620.17/x
  3. Step 3: Cross multiply
    1,400.27x = 2,100.53 × 620.17
  4. Step 4: Simplify right side
    1,400.27x = 1,302,685.69
  5. Step 5: Solve for x
    x = 1,302,685.69/1,400.27
  6. Step 6: Final answer
    x = 930.31

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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.