Home / 3,011.70-4,155.96-1,685.38

Finding the Fourth Proportional to 3,011.70, 4,155.96 and 1,685.38

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Solution

The fourth proportional to 3,011.70, 4,155.96 and 1,685.38 is: 2,325.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,011.70 : 4,155.96 = 1,685.38 : x
  2. Step 2: Convert to fraction form
    3,011.70/4,155.96 = 1,685.38/x
  3. Step 3: Cross multiply
    3,011.70x = 4,155.96 × 1,685.38
  4. Step 4: Simplify right side
    3,011.70x = 7,004,371.86
  5. Step 5: Solve for x
    x = 7,004,371.86/3,011.70
  6. Step 6: Final answer
    x = 2,325.72

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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.