Home / 3,138.09-4,330.67-2,076.77

Finding the Fourth Proportional to 3,138.09, 4,330.67 and 2,076.77

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Solution

The fourth proportional to 3,138.09, 4,330.67 and 2,076.77 is: 2,866.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,138.09 : 4,330.67 = 2,076.77 : x
  2. Step 2: Convert to fraction form
    3,138.09/4,330.67 = 2,076.77/x
  3. Step 3: Cross multiply
    3,138.09x = 4,330.67 × 2,076.77
  4. Step 4: Simplify right side
    3,138.09x = 8,993,773.50
  5. Step 5: Solve for x
    x = 8,993,773.50/3,138.09
  6. Step 6: Final answer
    x = 2,866.00

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Half scale
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Double scale
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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.