Home / 1,621.89-2,237.63-922.86

Finding the Fourth Proportional to 1,621.89, 2,237.63 and 922.86

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Solution

The fourth proportional to 1,621.89, 2,237.63 and 922.86 is: 1,273.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,621.89 : 2,237.63 = 922.86 : x
  2. Step 2: Convert to fraction form
    1,621.89/2,237.63 = 922.86/x
  3. Step 3: Cross multiply
    1,621.89x = 2,237.63 × 922.86
  4. Step 4: Simplify right side
    1,621.89x = 2,065,014.61
  5. Step 5: Solve for x
    x = 2,065,014.61/1,621.89
  6. Step 6: Final answer
    x = 1,273.21

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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.