Home / 2,328.14-3,212.75-1,280.19

Finding the Fourth Proportional to 2,328.14, 3,212.75 and 1,280.19

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Solution

The fourth proportional to 2,328.14, 3,212.75 and 1,280.19 is: 1,766.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,328.14 : 3,212.75 = 1,280.19 : x
  2. Step 2: Convert to fraction form
    2,328.14/3,212.75 = 1,280.19/x
  3. Step 3: Cross multiply
    2,328.14x = 3,212.75 × 1,280.19
  4. Step 4: Simplify right side
    2,328.14x = 4,112,924.02
  5. Step 5: Solve for x
    x = 4,112,924.02/2,328.14
  6. Step 6: Final answer
    x = 1,766.62

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Half scale
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Double scale
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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.