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Finding the Fourth Proportional to 2,971.76, 4,458.96 and 1,329.32

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Solution

The fourth proportional to 2,971.76, 4,458.96 and 1,329.32 is: 1,994.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,971.76 : 4,458.96 = 1,329.32 : x
  2. Step 2: Convert to fraction form
    2,971.76/4,458.96 = 1,329.32/x
  3. Step 3: Cross multiply
    2,971.76x = 4,458.96 × 1,329.32
  4. Step 4: Simplify right side
    2,971.76x = 5,927,384.71
  5. Step 5: Solve for x
    x = 5,927,384.71/2,971.76
  6. Step 6: Final answer
    x = 1,994.57

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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.