Home / 1,918.10-2,877.15-1,907.30

Finding the Fourth Proportional to 1,918.10, 2,877.15 and 1,907.30

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Solution

The fourth proportional to 1,918.10, 2,877.15 and 1,907.30 is: 2,860.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,918.10 : 2,877.15 = 1,907.30 : x
  2. Step 2: Convert to fraction form
    1,918.10/2,877.15 = 1,907.30/x
  3. Step 3: Cross multiply
    1,918.10x = 2,877.15 × 1,907.30
  4. Step 4: Simplify right side
    1,918.10x = 5,487,588.20
  5. Step 5: Solve for x
    x = 5,487,588.20/1,918.10
  6. Step 6: Final answer
    x = 2,860.95

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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.