Home / 2,028.32-2,798.88-1,330.40

Finding the Fourth Proportional to 2,028.32, 2,798.88 and 1,330.40

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Solution

The fourth proportional to 2,028.32, 2,798.88 and 1,330.40 is: 1,835.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,028.32 : 2,798.88 = 1,330.40 : x
  2. Step 2: Convert to fraction form
    2,028.32/2,798.88 = 1,330.40/x
  3. Step 3: Cross multiply
    2,028.32x = 2,798.88 × 1,330.40
  4. Step 4: Simplify right side
    2,028.32x = 3,723,629.95
  5. Step 5: Solve for x
    x = 3,723,629.95/2,028.32
  6. Step 6: Final answer
    x = 1,835.82

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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.