Home / 1,918.83-2,658.68-1,877.31

Finding the Fourth Proportional to 1,918.83, 2,658.68 and 1,877.31

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Solution

The fourth proportional to 1,918.83, 2,658.68 and 1,877.31 is: 2,601.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,918.83 : 2,658.68 = 1,877.31 : x
  2. Step 2: Convert to fraction form
    1,918.83/2,658.68 = 1,877.31/x
  3. Step 3: Cross multiply
    1,918.83x = 2,658.68 × 1,877.31
  4. Step 4: Simplify right side
    1,918.83x = 4,991,157.16
  5. Step 5: Solve for x
    x = 4,991,157.16/1,918.83
  6. Step 6: Final answer
    x = 2,601.15

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.