Home / 2,108.23-2,908.67-1,223.71

Finding the Fourth Proportional to 2,108.23, 2,908.67 and 1,223.71

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Solution

The fourth proportional to 2,108.23, 2,908.67 and 1,223.71 is: 1,688.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,108.23 : 2,908.67 = 1,223.71 : x
  2. Step 2: Convert to fraction form
    2,108.23/2,908.67 = 1,223.71/x
  3. Step 3: Cross multiply
    2,108.23x = 2,908.67 × 1,223.71
  4. Step 4: Simplify right side
    2,108.23x = 3,559,355.18
  5. Step 5: Solve for x
    x = 3,559,355.18/2,108.23
  6. Step 6: Final answer
    x = 1,688.32

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.