Home / 2,774.91-3,829.38-1,780.58

Finding the Fourth Proportional to 2,774.91, 3,829.38 and 1,780.58

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Solution

The fourth proportional to 2,774.91, 3,829.38 and 1,780.58 is: 2,457.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,774.91 : 3,829.38 = 1,780.58 : x
  2. Step 2: Convert to fraction form
    2,774.91/3,829.38 = 1,780.58/x
  3. Step 3: Cross multiply
    2,774.91x = 3,829.38 × 1,780.58
  4. Step 4: Simplify right side
    2,774.91x = 6,818,520.34
  5. Step 5: Solve for x
    x = 6,818,520.34/2,774.91
  6. Step 6: Final answer
    x = 2,457.21

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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.