Home / 3,011.52-4,155.78-1,685.22

Finding the Fourth Proportional to 3,011.52, 4,155.78 and 1,685.22

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Solution

The fourth proportional to 3,011.52, 4,155.78 and 1,685.22 is: 2,325.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,011.52 : 4,155.78 = 1,685.22 : x
  2. Step 2: Convert to fraction form
    3,011.52/4,155.78 = 1,685.22/x
  3. Step 3: Cross multiply
    3,011.52x = 4,155.78 × 1,685.22
  4. Step 4: Simplify right side
    3,011.52x = 7,003,403.57
  5. Step 5: Solve for x
    x = 7,003,403.57/3,011.52
  6. Step 6: Final answer
    x = 2,325.54

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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.