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Finding the Fourth Proportional to 8,689.85, 11,992.00 and 4,710.98

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Solution

The fourth proportional to 8,689.85, 11,992.00 and 4,710.98 is: 6,501.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,689.85 : 11,992.00 = 4,710.98 : x
  2. Step 2: Convert to fraction form
    8,689.85/11,992.00 = 4,710.98/x
  3. Step 3: Cross multiply
    8,689.85x = 11,992.00 × 4,710.98
  4. Step 4: Simplify right side
    8,689.85x = 56,494,090.36
  5. Step 5: Solve for x
    x = 56,494,090.36/8,689.85
  6. Step 6: Final answer
    x = 6,501.16

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1.5x scale

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.