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Finding the Fourth Proportional to 8,730, 12,047.40 and 5,004

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Solution

The fourth proportional to 8,730, 12,047.40 and 5,004 is: 6,905.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,730 : 12,047.40 = 5,004 : x
  2. Step 2: Convert to fraction form
    8,730/12,047.40 = 5,004/x
  3. Step 3: Cross multiply
    8,730x = 12,047.40 × 5,004
  4. Step 4: Simplify right side
    8,730x = 60,285,189.60
  5. Step 5: Solve for x
    x = 60,285,189.60/8,730
  6. Step 6: Final answer
    x = 6,905.52

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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.