Home / 4,209.28-6,313.69-1,287.60

Finding the Fourth Proportional to 4,209.28, 6,313.69 and 1,287.60

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Solution

The fourth proportional to 4,209.28, 6,313.69 and 1,287.60 is: 1,931.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,209.28 : 6,313.69 = 1,287.60 : x
  2. Step 2: Convert to fraction form
    4,209.28/6,313.69 = 1,287.60/x
  3. Step 3: Cross multiply
    4,209.28x = 6,313.69 × 1,287.60
  4. Step 4: Simplify right side
    4,209.28x = 8,129,507.24
  5. Step 5: Solve for x
    x = 8,129,507.24/4,209.28
  6. Step 6: Final answer
    x = 1,931.33

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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.