Home / 3,821.40-5,732.10-2,509.20

Finding the Fourth Proportional to 3,821.40, 5,732.10 and 2,509.20

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Solution

The fourth proportional to 3,821.40, 5,732.10 and 2,509.20 is: 3,763.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,821.40 : 5,732.10 = 2,509.20 : x
  2. Step 2: Convert to fraction form
    3,821.40/5,732.10 = 2,509.20/x
  3. Step 3: Cross multiply
    3,821.40x = 5,732.10 × 2,509.20
  4. Step 4: Simplify right side
    3,821.40x = 14,382,985.32
  5. Step 5: Solve for x
    x = 14,382,985.32/3,821.40
  6. Step 6: Final answer
    x = 3,763.80

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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.