Home / 3,011.81-4,512.85-1,855.13

Finding the Fourth Proportional to 3,011.81, 4,512.85 and 1,855.13

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Solution

The fourth proportional to 3,011.81, 4,512.85 and 1,855.13 is: 2,779.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,011.81 : 4,512.85 = 1,855.13 : x
  2. Step 2: Convert to fraction form
    3,011.81/4,512.85 = 1,855.13/x
  3. Step 3: Cross multiply
    3,011.81x = 4,512.85 × 1,855.13
  4. Step 4: Simplify right side
    3,011.81x = 8,371,896.22
  5. Step 5: Solve for x
    x = 8,371,896.22/3,011.81
  6. Step 6: Final answer
    x = 2,779.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.