Home / 4,288.30-6,420.30-3,308.20

Finding the Fourth Proportional to 4,288.30, 6,420.30 and 3,308.20

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Solution

The fourth proportional to 4,288.30, 6,420.30 and 3,308.20 is: 4,952.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,288.30 : 6,420.30 = 3,308.20 : x
  2. Step 2: Convert to fraction form
    4,288.30/6,420.30 = 3,308.20/x
  3. Step 3: Cross multiply
    4,288.30x = 6,420.30 × 3,308.20
  4. Step 4: Simplify right side
    4,288.30x = 21,239,636.46
  5. Step 5: Solve for x
    x = 21,239,636.46/4,288.30
  6. Step 6: Final answer
    x = 4,952.93

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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.