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Finding the Fourth Proportional to 3,318.08, 4,976.29 and 977.62

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Solution

The fourth proportional to 3,318.08, 4,976.29 and 977.62 is: 1,466.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,318.08 : 4,976.29 = 977.62 : x
  2. Step 2: Convert to fraction form
    3,318.08/4,976.29 = 977.62/x
  3. Step 3: Cross multiply
    3,318.08x = 4,976.29 × 977.62
  4. Step 4: Simplify right side
    3,318.08x = 4,864,920.63
  5. Step 5: Solve for x
    x = 4,864,920.63/3,318.08
  6. Step 6: Final answer
    x = 1,466.19

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1.5x scale

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.