Home / 4,231.90-6,345.85-1,269.20

Finding the Fourth Proportional to 4,231.90, 6,345.85 and 1,269.20

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Solution

The fourth proportional to 4,231.90, 6,345.85 and 1,269.20 is: 1,903.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,231.90 : 6,345.85 = 1,269.20 : x
  2. Step 2: Convert to fraction form
    4,231.90/6,345.85 = 1,269.20/x
  3. Step 3: Cross multiply
    4,231.90x = 6,345.85 × 1,269.20
  4. Step 4: Simplify right side
    4,231.90x = 8,054,167.89
  5. Step 5: Solve for x
    x = 8,054,167.89/4,231.90
  6. Step 6: Final answer
    x = 1,903.20

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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.