Home / 3,021.40-4,168.02-2,690.20

Finding the Fourth Proportional to 3,021.40, 4,168.02 and 2,690.20

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Solution

The fourth proportional to 3,021.40, 4,168.02 and 2,690.20 is: 3,711.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,021.40 : 4,168.02 = 2,690.20 : x
  2. Step 2: Convert to fraction form
    3,021.40/4,168.02 = 2,690.20/x
  3. Step 3: Cross multiply
    3,021.40x = 4,168.02 × 2,690.20
  4. Step 4: Simplify right side
    3,021.40x = 11,212,807.40
  5. Step 5: Solve for x
    x = 11,212,807.40/3,021.40
  6. Step 6: Final answer
    x = 3,711.13

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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.