Home / 1,907.10-2,860.65-1,323.90

Finding the Fourth Proportional to 1,907.10, 2,860.65 and 1,323.90

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Solution

The fourth proportional to 1,907.10, 2,860.65 and 1,323.90 is: 1,985.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,907.10 : 2,860.65 = 1,323.90 : x
  2. Step 2: Convert to fraction form
    1,907.10/2,860.65 = 1,323.90/x
  3. Step 3: Cross multiply
    1,907.10x = 2,860.65 × 1,323.90
  4. Step 4: Simplify right side
    1,907.10x = 3,787,214.54
  5. Step 5: Solve for x
    x = 3,787,214.54/1,907.10
  6. Step 6: Final answer
    x = 1,985.85

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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.