Home / 2,853.40-4,280.90-1,392.60

Finding the Fourth Proportional to 2,853.40, 4,280.90 and 1,392.60

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Solution

The fourth proportional to 2,853.40, 4,280.90 and 1,392.60 is: 2,089.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,853.40 : 4,280.90 = 1,392.60 : x
  2. Step 2: Convert to fraction form
    2,853.40/4,280.90 = 1,392.60/x
  3. Step 3: Cross multiply
    2,853.40x = 4,280.90 × 1,392.60
  4. Step 4: Simplify right side
    2,853.40x = 5,961,581.34
  5. Step 5: Solve for x
    x = 5,961,581.34/2,853.40
  6. Step 6: Final answer
    x = 2,089.29

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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.