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Finding the Fourth Proportional to 2,388.32, 3,582 and 744.47

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Solution

The fourth proportional to 2,388.32, 3,582 and 744.47 is: 1,116.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,388.32 : 3,582 = 744.47 : x
  2. Step 2: Convert to fraction form
    2,388.32/3,582 = 744.47/x
  3. Step 3: Cross multiply
    2,388.32x = 3,582 × 744.47
  4. Step 4: Simplify right side
    2,388.32x = 2,666,673.63
  5. Step 5: Solve for x
    x = 2,666,673.63/2,388.32
  6. Step 6: Final answer
    x = 1,116.55

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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.