Home / 2,915.36-4,379.56-1,761.92

Finding the Fourth Proportional to 2,915.36, 4,379.56 and 1,761.92

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Solution

The fourth proportional to 2,915.36, 4,379.56 and 1,761.92 is: 2,646.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,915.36 : 4,379.56 = 1,761.92 : x
  2. Step 2: Convert to fraction form
    2,915.36/4,379.56 = 1,761.92/x
  3. Step 3: Cross multiply
    2,915.36x = 4,379.56 × 1,761.92
  4. Step 4: Simplify right side
    2,915.36x = 7,716,434.36
  5. Step 5: Solve for x
    x = 7,716,434.36/2,915.36
  6. Step 6: Final answer
    x = 2,646.82

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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.