Home / 3,123.16-4,679.26-2,784.20

Finding the Fourth Proportional to 3,123.16, 4,679.26 and 2,784.20

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Solution

The fourth proportional to 3,123.16, 4,679.26 and 2,784.20 is: 4,171.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,123.16 : 4,679.26 = 2,784.20 : x
  2. Step 2: Convert to fraction form
    3,123.16/4,679.26 = 2,784.20/x
  3. Step 3: Cross multiply
    3,123.16x = 4,679.26 × 2,784.20
  4. Step 4: Simplify right side
    3,123.16x = 13,027,995.69
  5. Step 5: Solve for x
    x = 13,027,995.69/3,123.16
  6. Step 6: Final answer
    x = 4,171.41

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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.