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Finding the Fourth Proportional to 8,699.31, 12,005.01 and 4,720.41

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Solution

The fourth proportional to 8,699.31, 12,005.01 and 4,720.41 is: 6,514.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,699.31 : 12,005.01 = 4,720.41 : x
  2. Step 2: Convert to fraction form
    8,699.31/12,005.01 = 4,720.41/x
  3. Step 3: Cross multiply
    8,699.31x = 12,005.01 × 4,720.41
  4. Step 4: Simplify right side
    8,699.31x = 56,668,569.25
  5. Step 5: Solve for x
    x = 56,668,569.25/8,699.31
  6. Step 6: Final answer
    x = 6,514.15

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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.