Home / 2,949.76-4,070.69-1,690.89

Finding the Fourth Proportional to 2,949.76, 4,070.69 and 1,690.89

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Solution

The fourth proportional to 2,949.76, 4,070.69 and 1,690.89 is: 2,333.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,949.76 : 4,070.69 = 1,690.89 : x
  2. Step 2: Convert to fraction form
    2,949.76/4,070.69 = 1,690.89/x
  3. Step 3: Cross multiply
    2,949.76x = 4,070.69 × 1,690.89
  4. Step 4: Simplify right side
    2,949.76x = 6,883,091.36
  5. Step 5: Solve for x
    x = 6,883,091.36/2,949.76
  6. Step 6: Final answer
    x = 2,333.44

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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.