Home / 3,072.02-4,239.89-1,813.38

Finding the Fourth Proportional to 3,072.02, 4,239.89 and 1,813.38

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Solution

The fourth proportional to 3,072.02, 4,239.89 and 1,813.38 is: 2,502.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,072.02 : 4,239.89 = 1,813.38 : x
  2. Step 2: Convert to fraction form
    3,072.02/4,239.89 = 1,813.38/x
  3. Step 3: Cross multiply
    3,072.02x = 4,239.89 × 1,813.38
  4. Step 4: Simplify right side
    3,072.02x = 7,688,513.56
  5. Step 5: Solve for x
    x = 7,688,513.56/3,072.02
  6. Step 6: Final answer
    x = 2,502.76

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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.