Home / 1,621.68-2,235.32-1,306.08

Finding the Fourth Proportional to 1,621.68, 2,235.32 and 1,306.08

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Solution

The fourth proportional to 1,621.68, 2,235.32 and 1,306.08 is: 1,800.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,621.68 : 2,235.32 = 1,306.08 : x
  2. Step 2: Convert to fraction form
    1,621.68/2,235.32 = 1,306.08/x
  3. Step 3: Cross multiply
    1,621.68x = 2,235.32 × 1,306.08
  4. Step 4: Simplify right side
    1,621.68x = 2,919,506.75
  5. Step 5: Solve for x
    x = 2,919,506.75/1,621.68
  6. Step 6: Final answer
    x = 1,800.30

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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.