Home / 2,918.75-4,348.62-2,779.43

Finding the Fourth Proportional to 2,918.75, 4,348.62 and 2,779.43

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Solution

The fourth proportional to 2,918.75, 4,348.62 and 2,779.43 is: 4,141.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,918.75 : 4,348.62 = 2,779.43 : x
  2. Step 2: Convert to fraction form
    2,918.75/4,348.62 = 2,779.43/x
  3. Step 3: Cross multiply
    2,918.75x = 4,348.62 × 2,779.43
  4. Step 4: Simplify right side
    2,918.75x = 12,086,663.14
  5. Step 5: Solve for x
    x = 12,086,663.14/2,918.75
  6. Step 6: Final answer
    x = 4,141.05

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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.