Home / 4,285.70-6,431.28-2,864.15

Finding the Fourth Proportional to 4,285.70, 6,431.28 and 2,864.15

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Solution

The fourth proportional to 4,285.70, 6,431.28 and 2,864.15 is: 4,298.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,285.70 : 6,431.28 = 2,864.15 : x
  2. Step 2: Convert to fraction form
    4,285.70/6,431.28 = 2,864.15/x
  3. Step 3: Cross multiply
    4,285.70x = 6,431.28 × 2,864.15
  4. Step 4: Simplify right side
    4,285.70x = 18,420,150.61
  5. Step 5: Solve for x
    x = 18,420,150.61/4,285.70
  6. Step 6: Final answer
    x = 4,298.05

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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.