Home / 1,872.08-2,583.60-1,282.40

Finding the Fourth Proportional to 1,872.08, 2,583.60 and 1,282.40

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Solution

The fourth proportional to 1,872.08, 2,583.60 and 1,282.40 is: 1,769.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,872.08 : 2,583.60 = 1,282.40 : x
  2. Step 2: Convert to fraction form
    1,872.08/2,583.60 = 1,282.40/x
  3. Step 3: Cross multiply
    1,872.08x = 2,583.60 × 1,282.40
  4. Step 4: Simplify right side
    1,872.08x = 3,313,208.64
  5. Step 5: Solve for x
    x = 3,313,208.64/1,872.08
  6. Step 6: Final answer
    x = 1,769.80

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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.