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Finding the Fourth Proportional to 5,783.61, 8,678.45 and 3,153

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Solution

The fourth proportional to 5,783.61, 8,678.45 and 3,153 is: 4,731.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,783.61 : 8,678.45 = 3,153 : x
  2. Step 2: Convert to fraction form
    5,783.61/8,678.45 = 3,153/x
  3. Step 3: Cross multiply
    5,783.61x = 8,678.45 × 3,153
  4. Step 4: Simplify right side
    5,783.61x = 27,363,160.73
  5. Step 5: Solve for x
    x = 27,363,160.73/5,783.61
  6. Step 6: Final answer
    x = 4,731.16

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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.