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Finding the Fourth Proportional to 2,158.18, 3,237.28 and 619.18

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Solution

The fourth proportional to 2,158.18, 3,237.28 and 619.18 is: 928.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,158.18 : 3,237.28 = 619.18 : x
  2. Step 2: Convert to fraction form
    2,158.18/3,237.28 = 619.18/x
  3. Step 3: Cross multiply
    2,158.18x = 3,237.28 × 619.18
  4. Step 4: Simplify right side
    2,158.18x = 2,004,459.03
  5. Step 5: Solve for x
    x = 2,004,459.03/2,158.18
  6. Step 6: Final answer
    x = 928.77

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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.