Home / 2,021.28-2,788.08-1,274.60

Finding the Fourth Proportional to 2,021.28, 2,788.08 and 1,274.60

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Solution

The fourth proportional to 2,021.28, 2,788.08 and 1,274.60 is: 1,758.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,021.28 : 2,788.08 = 1,274.60 : x
  2. Step 2: Convert to fraction form
    2,021.28/2,788.08 = 1,274.60/x
  3. Step 3: Cross multiply
    2,021.28x = 2,788.08 × 1,274.60
  4. Step 4: Simplify right side
    2,021.28x = 3,553,686.77
  5. Step 5: Solve for x
    x = 3,553,686.77/2,021.28
  6. Step 6: Final answer
    x = 1,758.14

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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.