Home / 2,776.53-3,830.31-1,781.45

Finding the Fourth Proportional to 2,776.53, 3,830.31 and 1,781.45

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Solution

The fourth proportional to 2,776.53, 3,830.31 and 1,781.45 is: 2,457.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,776.53 : 3,830.31 = 1,781.45 : x
  2. Step 2: Convert to fraction form
    2,776.53/3,830.31 = 1,781.45/x
  3. Step 3: Cross multiply
    2,776.53x = 3,830.31 × 1,781.45
  4. Step 4: Simplify right side
    2,776.53x = 6,823,486.60
  5. Step 5: Solve for x
    x = 6,823,486.60/2,776.53
  6. Step 6: Final answer
    x = 2,457.56

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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.