Home / 3,117.70-4,662.78-2,773.45

Finding the Fourth Proportional to 3,117.70, 4,662.78 and 2,773.45

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Solution

The fourth proportional to 3,117.70, 4,662.78 and 2,773.45 is: 4,147.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,117.70 : 4,662.78 = 2,773.45 : x
  2. Step 2: Convert to fraction form
    3,117.70/4,662.78 = 2,773.45/x
  3. Step 3: Cross multiply
    3,117.70x = 4,662.78 × 2,773.45
  4. Step 4: Simplify right side
    3,117.70x = 12,931,987.19
  5. Step 5: Solve for x
    x = 12,931,987.19/3,117.70
  6. Step 6: Final answer
    x = 4,147.93

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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.