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Finding the Fourth Proportional to 1,593.60, 2,389.44 and 619.20

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Solution

The fourth proportional to 1,593.60, 2,389.44 and 619.20 is: 928.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,593.60 : 2,389.44 = 619.20 : x
  2. Step 2: Convert to fraction form
    1,593.60/2,389.44 = 619.20/x
  3. Step 3: Cross multiply
    1,593.60x = 2,389.44 × 619.20
  4. Step 4: Simplify right side
    1,593.60x = 1,479,541.25
  5. Step 5: Solve for x
    x = 1,479,541.25/1,593.60
  6. Step 6: Final answer
    x = 928.43

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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.