Home / 1,871.78-2,582.99-1,074.56

Finding the Fourth Proportional to 1,871.78, 2,582.99 and 1,074.56

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Solution

The fourth proportional to 1,871.78, 2,582.99 and 1,074.56 is: 1,482.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,871.78 : 2,582.99 = 1,074.56 : x
  2. Step 2: Convert to fraction form
    1,871.78/2,582.99 = 1,074.56/x
  3. Step 3: Cross multiply
    1,871.78x = 2,582.99 × 1,074.56
  4. Step 4: Simplify right side
    1,871.78x = 2,775,559.45
  5. Step 5: Solve for x
    x = 2,775,559.45/1,871.78
  6. Step 6: Final answer
    x = 1,482.85

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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.