Home / 4,200.76-6,300.96-1,278.98

Finding the Fourth Proportional to 4,200.76, 6,300.96 and 1,278.98

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Solution

The fourth proportional to 4,200.76, 6,300.96 and 1,278.98 is: 1,918.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,200.76 : 6,300.96 = 1,278.98 : x
  2. Step 2: Convert to fraction form
    4,200.76/6,300.96 = 1,278.98/x
  3. Step 3: Cross multiply
    4,200.76x = 6,300.96 × 1,278.98
  4. Step 4: Simplify right side
    4,200.76x = 8,058,801.82
  5. Step 5: Solve for x
    x = 8,058,801.82/4,200.76
  6. Step 6: Final answer
    x = 1,918.42

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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.