Home / 3,112.64-4,296.30-2,119.58

Finding the Fourth Proportional to 3,112.64, 4,296.30 and 2,119.58

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Solution

The fourth proportional to 3,112.64, 4,296.30 and 2,119.58 is: 2,925.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,112.64 : 4,296.30 = 2,119.58 : x
  2. Step 2: Convert to fraction form
    3,112.64/4,296.30 = 2,119.58/x
  3. Step 3: Cross multiply
    3,112.64x = 4,296.30 × 2,119.58
  4. Step 4: Simplify right side
    3,112.64x = 9,106,351.55
  5. Step 5: Solve for x
    x = 9,106,351.55/3,112.64
  6. Step 6: Final answer
    x = 2,925.60

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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.