Home / 1,778.25-2,455.20-1,080.84

Finding the Fourth Proportional to 1,778.25, 2,455.20 and 1,080.84

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Solution

The fourth proportional to 1,778.25, 2,455.20 and 1,080.84 is: 1,492.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,778.25 : 2,455.20 = 1,080.84 : x
  2. Step 2: Convert to fraction form
    1,778.25/2,455.20 = 1,080.84/x
  3. Step 3: Cross multiply
    1,778.25x = 2,455.20 × 1,080.84
  4. Step 4: Simplify right side
    1,778.25x = 2,653,678.37
  5. Step 5: Solve for x
    x = 2,653,678.37/1,778.25
  6. Step 6: Final answer
    x = 1,492.30

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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.