Home / 2,103.21-3,156.84-1,485.18

Finding the Fourth Proportional to 2,103.21, 3,156.84 and 1,485.18

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Solution

The fourth proportional to 2,103.21, 3,156.84 and 1,485.18 is: 2,229.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,103.21 : 3,156.84 = 1,485.18 : x
  2. Step 2: Convert to fraction form
    2,103.21/3,156.84 = 1,485.18/x
  3. Step 3: Cross multiply
    2,103.21x = 3,156.84 × 1,485.18
  4. Step 4: Simplify right side
    2,103.21x = 4,688,475.63
  5. Step 5: Solve for x
    x = 4,688,475.63/2,103.21
  6. Step 6: Final answer
    x = 2,229.20

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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.