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Finding the Fourth Proportional to 2,914.99, 4,388.23 and 2,656.65

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Solution

The fourth proportional to 2,914.99, 4,388.23 and 2,656.65 is: 3,999.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,914.99 : 4,388.23 = 2,656.65 : x
  2. Step 2: Convert to fraction form
    2,914.99/4,388.23 = 2,656.65/x
  3. Step 3: Cross multiply
    2,914.99x = 4,388.23 × 2,656.65
  4. Step 4: Simplify right side
    2,914.99x = 11,657,971.38
  5. Step 5: Solve for x
    x = 11,657,971.38/2,914.99
  6. Step 6: Final answer
    x = 3,999.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.