Home / 1,400.27-2,100.45-578.06

Finding the Fourth Proportional to 1,400.27, 2,100.45 and 578.06

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Solution

The fourth proportional to 1,400.27, 2,100.45 and 578.06 is: 867.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,400.27 : 2,100.45 = 578.06 : x
  2. Step 2: Convert to fraction form
    1,400.27/2,100.45 = 578.06/x
  3. Step 3: Cross multiply
    1,400.27x = 2,100.45 × 578.06
  4. Step 4: Simplify right side
    1,400.27x = 1,214,183.24
  5. Step 5: Solve for x
    x = 1,214,183.24/1,400.27
  6. Step 6: Final answer
    x = 867.11

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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.