Home / 2,328.83-3,213.80-1,280.89

Finding the Fourth Proportional to 2,328.83, 3,213.80 and 1,280.89

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Solution

The fourth proportional to 2,328.83, 3,213.80 and 1,280.89 is: 1,767.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,328.83 : 3,213.80 = 1,280.89 : x
  2. Step 2: Convert to fraction form
    2,328.83/3,213.80 = 1,280.89/x
  3. Step 3: Cross multiply
    2,328.83x = 3,213.80 × 1,280.89
  4. Step 4: Simplify right side
    2,328.83x = 4,116,524.28
  5. Step 5: Solve for x
    x = 4,116,524.28/2,328.83
  6. Step 6: Final answer
    x = 1,767.64

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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.