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Finding the Fourth Proportional to 3,113.33, 4,296.06 and 1,918.11

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Solution

The fourth proportional to 3,113.33, 4,296.06 and 1,918.11 is: 2,646.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,113.33 : 4,296.06 = 1,918.11 : x
  2. Step 2: Convert to fraction form
    3,113.33/4,296.06 = 1,918.11/x
  3. Step 3: Cross multiply
    3,113.33x = 4,296.06 × 1,918.11
  4. Step 4: Simplify right side
    3,113.33x = 8,240,315.65
  5. Step 5: Solve for x
    x = 8,240,315.65/3,113.33
  6. Step 6: Final answer
    x = 2,646.79

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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.