Home / 3,620.20-5,429.02-1,888.68

Finding the Fourth Proportional to 3,620.20, 5,429.02 and 1,888.68

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Solution

The fourth proportional to 3,620.20, 5,429.02 and 1,888.68 is: 2,832.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,620.20 : 5,429.02 = 1,888.68 : x
  2. Step 2: Convert to fraction form
    3,620.20/5,429.02 = 1,888.68/x
  3. Step 3: Cross multiply
    3,620.20x = 5,429.02 × 1,888.68
  4. Step 4: Simplify right side
    3,620.20x = 10,253,681.49
  5. Step 5: Solve for x
    x = 10,253,681.49/3,620.20
  6. Step 6: Final answer
    x = 2,832.35

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1.5x scale

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.