Home / 1,911.63-2,867.43-613.10

Finding the Fourth Proportional to 1,911.63, 2,867.43 and 613.10

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Solution

The fourth proportional to 1,911.63, 2,867.43 and 613.10 is: 919.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,911.63 : 2,867.43 = 613.10 : x
  2. Step 2: Convert to fraction form
    1,911.63/2,867.43 = 613.10/x
  3. Step 3: Cross multiply
    1,911.63x = 2,867.43 × 613.10
  4. Step 4: Simplify right side
    1,911.63x = 1,758,007.00
  5. Step 5: Solve for x
    x = 1,758,007.00/1,911.63
  6. Step 6: Final answer
    x = 919.64

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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.