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Finding the Fourth Proportional to 4,318.74, 6,478.11 and 1,855.29

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Solution

The fourth proportional to 4,318.74, 6,478.11 and 1,855.29 is: 2,782.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,318.74 : 6,478.11 = 1,855.29 : x
  2. Step 2: Convert to fraction form
    4,318.74/6,478.11 = 1,855.29/x
  3. Step 3: Cross multiply
    4,318.74x = 6,478.11 × 1,855.29
  4. Step 4: Simplify right side
    4,318.74x = 12,018,772.70
  5. Step 5: Solve for x
    x = 12,018,772.70/4,318.74
  6. Step 6: Final answer
    x = 2,782.94

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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.