Home / 4,200.21-6,301.20-1,238.40

Finding the Fourth Proportional to 4,200.21, 6,301.20 and 1,238.40

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Solution

The fourth proportional to 4,200.21, 6,301.20 and 1,238.40 is: 1,857.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,200.21 : 6,301.20 = 1,238.40 : x
  2. Step 2: Convert to fraction form
    4,200.21/6,301.20 = 1,238.40/x
  3. Step 3: Cross multiply
    4,200.21x = 6,301.20 × 1,238.40
  4. Step 4: Simplify right side
    4,200.21x = 7,803,406.08
  5. Step 5: Solve for x
    x = 7,803,406.08/4,200.21
  6. Step 6: Final answer
    x = 1,857.86

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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.