Home / 2,531.81-3,779.40-2,187.36

Finding the Fourth Proportional to 2,531.81, 3,779.40 and 2,187.36

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Solution

The fourth proportional to 2,531.81, 3,779.40 and 2,187.36 is: 3,265.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,531.81 : 3,779.40 = 2,187.36 : x
  2. Step 2: Convert to fraction form
    2,531.81/3,779.40 = 2,187.36/x
  3. Step 3: Cross multiply
    2,531.81x = 3,779.40 × 2,187.36
  4. Step 4: Simplify right side
    2,531.81x = 8,266,908.38
  5. Step 5: Solve for x
    x = 8,266,908.38/2,531.81
  6. Step 6: Final answer
    x = 3,265.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.