Home / 4,262.40-6,395.20-1,921.70

Finding the Fourth Proportional to 4,262.40, 6,395.20 and 1,921.70

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Solution

The fourth proportional to 4,262.40, 6,395.20 and 1,921.70 is: 2,883.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,262.40 : 6,395.20 = 1,921.70 : x
  2. Step 2: Convert to fraction form
    4,262.40/6,395.20 = 1,921.70/x
  3. Step 3: Cross multiply
    4,262.40x = 6,395.20 × 1,921.70
  4. Step 4: Simplify right side
    4,262.40x = 12,289,667.02
  5. Step 5: Solve for x
    x = 12,289,667.02/4,262.40
  6. Step 6: Final answer
    x = 2,883.27

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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.