Home / 2,225.70-3,071.16-1,281.48

Finding the Fourth Proportional to 2,225.70, 3,071.16 and 1,281.48

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Solution

The fourth proportional to 2,225.70, 3,071.16 and 1,281.48 is: 1,768.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,225.70 : 3,071.16 = 1,281.48 : x
  2. Step 2: Convert to fraction form
    2,225.70/3,071.16 = 1,281.48/x
  3. Step 3: Cross multiply
    2,225.70x = 3,071.16 × 1,281.48
  4. Step 4: Simplify right side
    2,225.70x = 3,935,630.12
  5. Step 5: Solve for x
    x = 3,935,630.12/2,225.70
  6. Step 6: Final answer
    x = 1,768.27

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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.