Home / 3,085.60-4,628.40-2,648.20

Finding the Fourth Proportional to 3,085.60, 4,628.40 and 2,648.20

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Solution

The fourth proportional to 3,085.60, 4,628.40 and 2,648.20 is: 3,972.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,085.60 : 4,628.40 = 2,648.20 : x
  2. Step 2: Convert to fraction form
    3,085.60/4,628.40 = 2,648.20/x
  3. Step 3: Cross multiply
    3,085.60x = 4,628.40 × 2,648.20
  4. Step 4: Simplify right side
    3,085.60x = 12,256,928.88
  5. Step 5: Solve for x
    x = 12,256,928.88/3,085.60
  6. Step 6: Final answer
    x = 3,972.30

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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.