Home / 3,561.78-5,340.64-1,612.11

Finding the Fourth Proportional to 3,561.78, 5,340.64 and 1,612.11

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Solution

The fourth proportional to 3,561.78, 5,340.64 and 1,612.11 is: 2,417.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,561.78 : 5,340.64 = 1,612.11 : x
  2. Step 2: Convert to fraction form
    3,561.78/5,340.64 = 1,612.11/x
  3. Step 3: Cross multiply
    3,561.78x = 5,340.64 × 1,612.11
  4. Step 4: Simplify right side
    3,561.78x = 8,609,699.15
  5. Step 5: Solve for x
    x = 8,609,699.15/3,561.78
  6. Step 6: Final answer
    x = 2,417.25

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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.