Home / 3,011.24-4,155.51-1,685.20

Finding the Fourth Proportional to 3,011.24, 4,155.51 and 1,685.20

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Solution

The fourth proportional to 3,011.24, 4,155.51 and 1,685.20 is: 2,325.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,011.24 : 4,155.51 = 1,685.20 : x
  2. Step 2: Convert to fraction form
    3,011.24/4,155.51 = 1,685.20/x
  3. Step 3: Cross multiply
    3,011.24x = 4,155.51 × 1,685.20
  4. Step 4: Simplify right side
    3,011.24x = 7,002,836.25
  5. Step 5: Solve for x
    x = 7,002,836.25/3,011.24
  6. Step 6: Final answer
    x = 2,325.57

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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.