Home / 2,854.80-4,280.48-1,392.08

Finding the Fourth Proportional to 2,854.80, 4,280.48 and 1,392.08

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Solution

The fourth proportional to 2,854.80, 4,280.48 and 1,392.08 is: 2,087.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,854.80 : 4,280.48 = 1,392.08 : x
  2. Step 2: Convert to fraction form
    2,854.80/4,280.48 = 1,392.08/x
  3. Step 3: Cross multiply
    2,854.80x = 4,280.48 × 1,392.08
  4. Step 4: Simplify right side
    2,854.80x = 5,958,770.60
  5. Step 5: Solve for x
    x = 5,958,770.60/2,854.80
  6. Step 6: Final answer
    x = 2,087.28

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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.