Home / 2,262.88-3,122.78-1,319.21

Finding the Fourth Proportional to 2,262.88, 3,122.78 and 1,319.21

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Solution

The fourth proportional to 2,262.88, 3,122.78 and 1,319.21 is: 1,820.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,262.88 : 3,122.78 = 1,319.21 : x
  2. Step 2: Convert to fraction form
    2,262.88/3,122.78 = 1,319.21/x
  3. Step 3: Cross multiply
    2,262.88x = 3,122.78 × 1,319.21
  4. Step 4: Simplify right side
    2,262.88x = 4,119,603.81
  5. Step 5: Solve for x
    x = 4,119,603.81/2,262.88
  6. Step 6: Final answer
    x = 1,820.52

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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.