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Finding the Fourth Proportional to 8,718, 12,030.62 and 4,739.02

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Solution

The fourth proportional to 8,718, 12,030.62 and 4,739.02 is: 6,539.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,718 : 12,030.62 = 4,739.02 : x
  2. Step 2: Convert to fraction form
    8,718/12,030.62 = 4,739.02/x
  3. Step 3: Cross multiply
    8,718x = 12,030.62 × 4,739.02
  4. Step 4: Simplify right side
    8,718x = 57,013,348.79
  5. Step 5: Solve for x
    x = 57,013,348.79/8,718
  6. Step 6: Final answer
    x = 6,539.73

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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.