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Finding the Fourth Proportional to 4,576, 6,316.32 and 2,920

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Solution

The fourth proportional to 4,576, 6,316.32 and 2,920 is: 4,030.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,576 : 6,316.32 = 2,920 : x
  2. Step 2: Convert to fraction form
    4,576/6,316.32 = 2,920/x
  3. Step 3: Cross multiply
    4,576x = 6,316.32 × 2,920
  4. Step 4: Simplify right side
    4,576x = 18,443,654.40
  5. Step 5: Solve for x
    x = 18,443,654.40/4,576
  6. Step 6: Final answer
    x = 4,030.52

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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.