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Finding the Fourth Proportional to 1,980.61, 2,971.42 and 593.96

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Solution

The fourth proportional to 1,980.61, 2,971.42 and 593.96 is: 891.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,980.61 : 2,971.42 = 593.96 : x
  2. Step 2: Convert to fraction form
    1,980.61/2,971.42 = 593.96/x
  3. Step 3: Cross multiply
    1,980.61x = 2,971.42 × 593.96
  4. Step 4: Simplify right side
    1,980.61x = 1,764,888.28
  5. Step 5: Solve for x
    x = 1,764,888.28/1,980.61
  6. Step 6: Final answer
    x = 891.08

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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.