Home / 1,353.45-2,027.75-1,280.55

Finding the Fourth Proportional to 1,353.45, 2,027.75 and 1,280.55

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Solution

The fourth proportional to 1,353.45, 2,027.75 and 1,280.55 is: 1,918.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,353.45 : 2,027.75 = 1,280.55 : x
  2. Step 2: Convert to fraction form
    1,353.45/2,027.75 = 1,280.55/x
  3. Step 3: Cross multiply
    1,353.45x = 2,027.75 × 1,280.55
  4. Step 4: Simplify right side
    1,353.45x = 2,596,628.86
  5. Step 5: Solve for x
    x = 2,596,628.86/1,353.45
  6. Step 6: Final answer
    x = 1,918.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.