Home / 3,072.78-4,240.50-1,675.62

Finding the Fourth Proportional to 3,072.78, 4,240.50 and 1,675.62

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Solution

The fourth proportional to 3,072.78, 4,240.50 and 1,675.62 is: 2,312.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,072.78 : 4,240.50 = 1,675.62 : x
  2. Step 2: Convert to fraction form
    3,072.78/4,240.50 = 1,675.62/x
  3. Step 3: Cross multiply
    3,072.78x = 4,240.50 × 1,675.62
  4. Step 4: Simplify right side
    3,072.78x = 7,105,466.61
  5. Step 5: Solve for x
    x = 7,105,466.61/3,072.78
  6. Step 6: Final answer
    x = 2,312.39

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Double scale
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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.