Home / 1,653.82-2,280.75-1,279.60

Finding the Fourth Proportional to 1,653.82, 2,280.75 and 1,279.60

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Solution

The fourth proportional to 1,653.82, 2,280.75 and 1,279.60 is: 1,764.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,653.82 : 2,280.75 = 1,279.60 : x
  2. Step 2: Convert to fraction form
    1,653.82/2,280.75 = 1,279.60/x
  3. Step 3: Cross multiply
    1,653.82x = 2,280.75 × 1,279.60
  4. Step 4: Simplify right side
    1,653.82x = 2,918,447.70
  5. Step 5: Solve for x
    x = 2,918,447.70/1,653.82
  6. Step 6: Final answer
    x = 1,764.67

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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.