Home / 1,284.28-1,928.64-1,225.85

Finding the Fourth Proportional to 1,284.28, 1,928.64 and 1,225.85

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Solution

The fourth proportional to 1,284.28, 1,928.64 and 1,225.85 is: 1,840.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,284.28 : 1,928.64 = 1,225.85 : x
  2. Step 2: Convert to fraction form
    1,284.28/1,928.64 = 1,225.85/x
  3. Step 3: Cross multiply
    1,284.28x = 1,928.64 × 1,225.85
  4. Step 4: Simplify right side
    1,284.28x = 2,364,218.30
  5. Step 5: Solve for x
    x = 2,364,218.30/1,284.28
  6. Step 6: Final answer
    x = 1,840.89

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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.