Home / 2,328.24-3,212.80-1,280.08

Finding the Fourth Proportional to 2,328.24, 3,212.80 and 1,280.08

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Solution

The fourth proportional to 2,328.24, 3,212.80 and 1,280.08 is: 1,766.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,328.24 : 3,212.80 = 1,280.08 : x
  2. Step 2: Convert to fraction form
    2,328.24/3,212.80 = 1,280.08/x
  3. Step 3: Cross multiply
    2,328.24x = 3,212.80 × 1,280.08
  4. Step 4: Simplify right side
    2,328.24x = 4,112,641.02
  5. Step 5: Solve for x
    x = 4,112,641.02/2,328.24
  6. Step 6: Final answer
    x = 1,766.42

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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.