Home / 3,011.27-4,155.65-1,685.21

Finding the Fourth Proportional to 3,011.27, 4,155.65 and 1,685.21

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Solution

The fourth proportional to 3,011.27, 4,155.65 and 1,685.21 is: 2,325.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,011.27 : 4,155.65 = 1,685.21 : x
  2. Step 2: Convert to fraction form
    3,011.27/4,155.65 = 1,685.21/x
  3. Step 3: Cross multiply
    3,011.27x = 4,155.65 × 1,685.21
  4. Step 4: Simplify right side
    3,011.27x = 7,003,113.73
  5. Step 5: Solve for x
    x = 7,003,113.73/3,011.27
  6. Step 6: Final answer
    x = 2,325.64

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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.