Home / 3,428.12-5,139.08-1,235.32

Finding the Fourth Proportional to 3,428.12, 5,139.08 and 1,235.32

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Solution

The fourth proportional to 3,428.12, 5,139.08 and 1,235.32 is: 1,851.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,428.12 : 5,139.08 = 1,235.32 : x
  2. Step 2: Convert to fraction form
    3,428.12/5,139.08 = 1,235.32/x
  3. Step 3: Cross multiply
    3,428.12x = 5,139.08 × 1,235.32
  4. Step 4: Simplify right side
    3,428.12x = 6,348,408.31
  5. Step 5: Solve for x
    x = 6,348,408.31/3,428.12
  6. Step 6: Final answer
    x = 1,851.86

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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.