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Finding the Fourth Proportional to 3,345.32, 4,616.53 and 1,929

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Solution

The fourth proportional to 3,345.32, 4,616.53 and 1,929 is: 2,662.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,345.32 : 4,616.53 = 1,929 : x
  2. Step 2: Convert to fraction form
    3,345.32/4,616.53 = 1,929/x
  3. Step 3: Cross multiply
    3,345.32x = 4,616.53 × 1,929
  4. Step 4: Simplify right side
    3,345.32x = 8,905,286.37
  5. Step 5: Solve for x
    x = 8,905,286.37/3,345.32
  6. Step 6: Final answer
    x = 2,662.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.