Home / 3,810.63-5,262.78-2,618.75

Finding the Fourth Proportional to 3,810.63, 5,262.78 and 2,618.75

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Solution

The fourth proportional to 3,810.63, 5,262.78 and 2,618.75 is: 3,616.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,810.63 : 5,262.78 = 2,618.75 : x
  2. Step 2: Convert to fraction form
    3,810.63/5,262.78 = 2,618.75/x
  3. Step 3: Cross multiply
    3,810.63x = 5,262.78 × 2,618.75
  4. Step 4: Simplify right side
    3,810.63x = 13,781,878.81
  5. Step 5: Solve for x
    x = 13,781,878.81/3,810.63
  6. Step 6: Final answer
    x = 3,616.69

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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.