Home / 3,145.48-4,340.40-1,819.60

Finding the Fourth Proportional to 3,145.48, 4,340.40 and 1,819.60

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Solution

The fourth proportional to 3,145.48, 4,340.40 and 1,819.60 is: 2,510.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,145.48 : 4,340.40 = 1,819.60 : x
  2. Step 2: Convert to fraction form
    3,145.48/4,340.40 = 1,819.60/x
  3. Step 3: Cross multiply
    3,145.48x = 4,340.40 × 1,819.60
  4. Step 4: Simplify right side
    3,145.48x = 7,897,791.84
  5. Step 5: Solve for x
    x = 7,897,791.84/3,145.48
  6. Step 6: Final answer
    x = 2,510.84

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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.