Home / 2,225.28-3,070.90-1,293.78

Finding the Fourth Proportional to 2,225.28, 3,070.90 and 1,293.78

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Solution

The fourth proportional to 2,225.28, 3,070.90 and 1,293.78 is: 1,785.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,225.28 : 3,070.90 = 1,293.78 : x
  2. Step 2: Convert to fraction form
    2,225.28/3,070.90 = 1,293.78/x
  3. Step 3: Cross multiply
    2,225.28x = 3,070.90 × 1,293.78
  4. Step 4: Simplify right side
    2,225.28x = 3,973,069.00
  5. Step 5: Solve for x
    x = 3,973,069.00/2,225.28
  6. Step 6: Final answer
    x = 1,785.42

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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.