Home / 2,821.80-4,232.70-2,457.30

Finding the Fourth Proportional to 2,821.80, 4,232.70 and 2,457.30

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Solution

The fourth proportional to 2,821.80, 4,232.70 and 2,457.30 is: 3,685.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,821.80 : 4,232.70 = 2,457.30 : x
  2. Step 2: Convert to fraction form
    2,821.80/4,232.70 = 2,457.30/x
  3. Step 3: Cross multiply
    2,821.80x = 4,232.70 × 2,457.30
  4. Step 4: Simplify right side
    2,821.80x = 10,401,013.71
  5. Step 5: Solve for x
    x = 10,401,013.71/2,821.80
  6. Step 6: Final answer
    x = 3,685.95

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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.