Home / 4,251.81-6,378.29-1,330.35

Finding the Fourth Proportional to 4,251.81, 6,378.29 and 1,330.35

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Solution

The fourth proportional to 4,251.81, 6,378.29 and 1,330.35 is: 1,995.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,251.81 : 6,378.29 = 1,330.35 : x
  2. Step 2: Convert to fraction form
    4,251.81/6,378.29 = 1,330.35/x
  3. Step 3: Cross multiply
    4,251.81x = 6,378.29 × 1,330.35
  4. Step 4: Simplify right side
    4,251.81x = 8,485,358.10
  5. Step 5: Solve for x
    x = 8,485,358.10/4,251.81
  6. Step 6: Final answer
    x = 1,995.70

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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.