Home / 2,774.64-4,160.84-1,387.44

Finding the Fourth Proportional to 2,774.64, 4,160.84 and 1,387.44

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Solution

The fourth proportional to 2,774.64, 4,160.84 and 1,387.44 is: 2,080.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,774.64 : 4,160.84 = 1,387.44 : x
  2. Step 2: Convert to fraction form
    2,774.64/4,160.84 = 1,387.44/x
  3. Step 3: Cross multiply
    2,774.64x = 4,160.84 × 1,387.44
  4. Step 4: Simplify right side
    2,774.64x = 5,772,915.85
  5. Step 5: Solve for x
    x = 5,772,915.85/2,774.64
  6. Step 6: Final answer
    x = 2,080.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.