Home / 2,284.94-3,153.20-1,290.20

Finding the Fourth Proportional to 2,284.94, 3,153.20 and 1,290.20

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Solution

The fourth proportional to 2,284.94, 3,153.20 and 1,290.20 is: 1,780.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,284.94 : 3,153.20 = 1,290.20 : x
  2. Step 2: Convert to fraction form
    2,284.94/3,153.20 = 1,290.20/x
  3. Step 3: Cross multiply
    2,284.94x = 3,153.20 × 1,290.20
  4. Step 4: Simplify right side
    2,284.94x = 4,068,236.42
  5. Step 5: Solve for x
    x = 4,068,236.42/2,284.94
  6. Step 6: Final answer
    x = 1,780.45

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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.