Home / 3,011.31-4,155.46-1,684.75

Finding the Fourth Proportional to 3,011.31, 4,155.46 and 1,684.75

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Solution

The fourth proportional to 3,011.31, 4,155.46 and 1,684.75 is: 2,324.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,011.31 : 4,155.46 = 1,684.75 : x
  2. Step 2: Convert to fraction form
    3,011.31/4,155.46 = 1,684.75/x
  3. Step 3: Cross multiply
    3,011.31x = 4,155.46 × 1,684.75
  4. Step 4: Simplify right side
    3,011.31x = 7,000,911.24
  5. Step 5: Solve for x
    x = 7,000,911.24/3,011.31
  6. Step 6: Final answer
    x = 2,324.87

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Half scale
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Double scale
Find fourth proportional to 3,012.31, 4,156.84 and 1,685.75
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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.