Home / 2,949.70-4,070.80-1,953.28

Finding the Fourth Proportional to 2,949.70, 4,070.80 and 1,953.28

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Solution

The fourth proportional to 2,949.70, 4,070.80 and 1,953.28 is: 2,695.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,949.70 : 4,070.80 = 1,953.28 : x
  2. Step 2: Convert to fraction form
    2,949.70/4,070.80 = 1,953.28/x
  3. Step 3: Cross multiply
    2,949.70x = 4,070.80 × 1,953.28
  4. Step 4: Simplify right side
    2,949.70x = 7,951,412.22
  5. Step 5: Solve for x
    x = 7,951,412.22/2,949.70
  6. Step 6: Final answer
    x = 2,695.67

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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.