Home / 3,810.90-5,261.30-2,395.78

Finding the Fourth Proportional to 3,810.90, 5,261.30 and 2,395.78

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Solution

The fourth proportional to 3,810.90, 5,261.30 and 2,395.78 is: 3,307.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,810.90 : 5,261.30 = 2,395.78 : x
  2. Step 2: Convert to fraction form
    3,810.90/5,261.30 = 2,395.78/x
  3. Step 3: Cross multiply
    3,810.90x = 5,261.30 × 2,395.78
  4. Step 4: Simplify right side
    3,810.90x = 12,604,917.31
  5. Step 5: Solve for x
    x = 12,604,917.31/3,810.90
  6. Step 6: Final answer
    x = 3,307.60

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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.