Home / 1,778.87-2,455.91-1,182.21

Finding the Fourth Proportional to 1,778.87, 2,455.91 and 1,182.21

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Solution

The fourth proportional to 1,778.87, 2,455.91 and 1,182.21 is: 1,632.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,778.87 : 2,455.91 = 1,182.21 : x
  2. Step 2: Convert to fraction form
    1,778.87/2,455.91 = 1,182.21/x
  3. Step 3: Cross multiply
    1,778.87x = 2,455.91 × 1,182.21
  4. Step 4: Simplify right side
    1,778.87x = 2,903,401.36
  5. Step 5: Solve for x
    x = 2,903,401.36/1,778.87
  6. Step 6: Final answer
    x = 1,632.16

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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.