Home / 2,145.60-3,218.40-2,026.80

Finding the Fourth Proportional to 2,145.60, 3,218.40 and 2,026.80

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Solution

The fourth proportional to 2,145.60, 3,218.40 and 2,026.80 is: 3,040.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,145.60 : 3,218.40 = 2,026.80 : x
  2. Step 2: Convert to fraction form
    2,145.60/3,218.40 = 2,026.80/x
  3. Step 3: Cross multiply
    2,145.60x = 3,218.40 × 2,026.80
  4. Step 4: Simplify right side
    2,145.60x = 6,523,053.12
  5. Step 5: Solve for x
    x = 6,523,053.12/2,145.60
  6. Step 6: Final answer
    x = 3,040.20

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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.