Home / 2,886.81-4,331.13-1,131.75

Finding the Fourth Proportional to 2,886.81, 4,331.13 and 1,131.75

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Solution

The fourth proportional to 2,886.81, 4,331.13 and 1,131.75 is: 1,697.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,886.81 : 4,331.13 = 1,131.75 : x
  2. Step 2: Convert to fraction form
    2,886.81/4,331.13 = 1,131.75/x
  3. Step 3: Cross multiply
    2,886.81x = 4,331.13 × 1,131.75
  4. Step 4: Simplify right side
    2,886.81x = 4,901,756.38
  5. Step 5: Solve for x
    x = 4,901,756.38/2,886.81
  6. Step 6: Final answer
    x = 1,697.98

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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.