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Finding the Fourth Proportional to 2,210.49, 3,314.93 and 911.25

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Solution

The fourth proportional to 2,210.49, 3,314.93 and 911.25 is: 1,366.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,210.49 : 3,314.93 = 911.25 : x
  2. Step 2: Convert to fraction form
    2,210.49/3,314.93 = 911.25/x
  3. Step 3: Cross multiply
    2,210.49x = 3,314.93 × 911.25
  4. Step 4: Simplify right side
    2,210.49x = 3,020,725.41
  5. Step 5: Solve for x
    x = 3,020,725.41/2,210.49
  6. Step 6: Final answer
    x = 1,366.54

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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.