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Finding the Fourth Proportional to 4,611.78, 6,914.82 and 1,980.99

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Solution

The fourth proportional to 4,611.78, 6,914.82 and 1,980.99 is: 2,970.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,611.78 : 6,914.82 = 1,980.99 : x
  2. Step 2: Convert to fraction form
    4,611.78/6,914.82 = 1,980.99/x
  3. Step 3: Cross multiply
    4,611.78x = 6,914.82 × 1,980.99
  4. Step 4: Simplify right side
    4,611.78x = 13,698,189.27
  5. Step 5: Solve for x
    x = 13,698,189.27/4,611.78
  6. Step 6: Final answer
    x = 2,970.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.