Home / 1,621.42-2,431.50-1,360.20

Finding the Fourth Proportional to 1,621.42, 2,431.50 and 1,360.20

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Solution

The fourth proportional to 1,621.42, 2,431.50 and 1,360.20 is: 2,039.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,621.42 : 2,431.50 = 1,360.20 : x
  2. Step 2: Convert to fraction form
    1,621.42/2,431.50 = 1,360.20/x
  3. Step 3: Cross multiply
    1,621.42x = 2,431.50 × 1,360.20
  4. Step 4: Simplify right side
    1,621.42x = 3,307,326.30
  5. Step 5: Solve for x
    x = 3,307,326.30/1,621.42
  6. Step 6: Final answer
    x = 2,039.77

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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.