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Finding the Fourth Proportional to 2,298.90, 3,448.38 and 911.64

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Solution

The fourth proportional to 2,298.90, 3,448.38 and 911.64 is: 1,367.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,298.90 : 3,448.38 = 911.64 : x
  2. Step 2: Convert to fraction form
    2,298.90/3,448.38 = 911.64/x
  3. Step 3: Cross multiply
    2,298.90x = 3,448.38 × 911.64
  4. Step 4: Simplify right side
    2,298.90x = 3,143,681.14
  5. Step 5: Solve for x
    x = 3,143,681.14/2,298.90
  6. Step 6: Final answer
    x = 1,367.47

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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.