Home / 3,521.34-4,861.35-2,821.50

Finding the Fourth Proportional to 3,521.34, 4,861.35 and 2,821.50

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Solution

The fourth proportional to 3,521.34, 4,861.35 and 2,821.50 is: 3,895.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,521.34 : 4,861.35 = 2,821.50 : x
  2. Step 2: Convert to fraction form
    3,521.34/4,861.35 = 2,821.50/x
  3. Step 3: Cross multiply
    3,521.34x = 4,861.35 × 2,821.50
  4. Step 4: Simplify right side
    3,521.34x = 13,716,299.03
  5. Step 5: Solve for x
    x = 13,716,299.03/3,521.34
  6. Step 6: Final answer
    x = 3,895.19

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1.5x scale

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.