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Finding the Fourth Proportional to 3,590, 5,382.36 and 2,420.24

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Solution

The fourth proportional to 3,590, 5,382.36 and 2,420.24 is: 3,628.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,590 : 5,382.36 = 2,420.24 : x
  2. Step 2: Convert to fraction form
    3,590/5,382.36 = 2,420.24/x
  3. Step 3: Cross multiply
    3,590x = 5,382.36 × 2,420.24
  4. Step 4: Simplify right side
    3,590x = 13,026,602.97
  5. Step 5: Solve for x
    x = 13,026,602.97/3,590
  6. Step 6: Final answer
    x = 3,628.58

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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.