Home / 4,309.40-6,456.90-3,690.20

Finding the Fourth Proportional to 4,309.40, 6,456.90 and 3,690.20

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Solution

The fourth proportional to 4,309.40, 6,456.90 and 3,690.20 is: 5,529.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,309.40 : 6,456.90 = 3,690.20 : x
  2. Step 2: Convert to fraction form
    4,309.40/6,456.90 = 3,690.20/x
  3. Step 3: Cross multiply
    4,309.40x = 6,456.90 × 3,690.20
  4. Step 4: Simplify right side
    4,309.40x = 23,827,252.38
  5. Step 5: Solve for x
    x = 23,827,252.38/4,309.40
  6. Step 6: Final answer
    x = 5,529.13

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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.