Home / 4,665.50-6,439.80-2,778.45

Finding the Fourth Proportional to 4,665.50, 6,439.80 and 2,778.45

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Solution

The fourth proportional to 4,665.50, 6,439.80 and 2,778.45 is: 3,835.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,665.50 : 6,439.80 = 2,778.45 : x
  2. Step 2: Convert to fraction form
    4,665.50/6,439.80 = 2,778.45/x
  3. Step 3: Cross multiply
    4,665.50x = 6,439.80 × 2,778.45
  4. Step 4: Simplify right side
    4,665.50x = 17,892,684.80
  5. Step 5: Solve for x
    x = 17,892,684.80/4,665.50
  6. Step 6: Final answer
    x = 3,835.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.