Home / 4,200.36-6,300.16-1,278.72

Finding the Fourth Proportional to 4,200.36, 6,300.16 and 1,278.72

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Solution

The fourth proportional to 4,200.36, 6,300.16 and 1,278.72 is: 1,917.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,200.36 : 6,300.16 = 1,278.72 : x
  2. Step 2: Convert to fraction form
    4,200.36/6,300.16 = 1,278.72/x
  3. Step 3: Cross multiply
    4,200.36x = 6,300.16 × 1,278.72
  4. Step 4: Simplify right side
    4,200.36x = 8,056,140.60
  5. Step 5: Solve for x
    x = 8,056,140.60/4,200.36
  6. Step 6: Final answer
    x = 1,917.96

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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.