Home / 3,123.02-4,305.30-1,927.21

Finding the Fourth Proportional to 3,123.02, 4,305.30 and 1,927.21

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Solution

The fourth proportional to 3,123.02, 4,305.30 and 1,927.21 is: 2,656.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,123.02 : 4,305.30 = 1,927.21 : x
  2. Step 2: Convert to fraction form
    3,123.02/4,305.30 = 1,927.21/x
  3. Step 3: Cross multiply
    3,123.02x = 4,305.30 × 1,927.21
  4. Step 4: Simplify right side
    3,123.02x = 8,297,217.21
  5. Step 5: Solve for x
    x = 8,297,217.21/3,123.02
  6. Step 6: Final answer
    x = 2,656.79

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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.