Home / 1,878.62-2,591.61-1,249.45

Finding the Fourth Proportional to 1,878.62, 2,591.61 and 1,249.45

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Solution

The fourth proportional to 1,878.62, 2,591.61 and 1,249.45 is: 1,723.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,878.62 : 2,591.61 = 1,249.45 : x
  2. Step 2: Convert to fraction form
    1,878.62/2,591.61 = 1,249.45/x
  3. Step 3: Cross multiply
    1,878.62x = 2,591.61 × 1,249.45
  4. Step 4: Simplify right side
    1,878.62x = 3,238,075.95
  5. Step 5: Solve for x
    x = 3,238,075.95/1,878.62
  6. Step 6: Final answer
    x = 1,723.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.