Home / 3,045.60-4,190.40-2,851.20

Finding the Fourth Proportional to 3,045.60, 4,190.40 and 2,851.20

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Solution

The fourth proportional to 3,045.60, 4,190.40 and 2,851.20 is: 3,922.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,045.60 : 4,190.40 = 2,851.20 : x
  2. Step 2: Convert to fraction form
    3,045.60/4,190.40 = 2,851.20/x
  3. Step 3: Cross multiply
    3,045.60x = 4,190.40 × 2,851.20
  4. Step 4: Simplify right side
    3,045.60x = 11,947,668.48
  5. Step 5: Solve for x
    x = 11,947,668.48/3,045.60
  6. Step 6: Final answer
    x = 3,922.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.