Home / 8,699.57-12,005.44-4,720.69

Finding the Fourth Proportional to 8,699.57, 12,005.44 and 4,720.69

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Solution

The fourth proportional to 8,699.57, 12,005.44 and 4,720.69 is: 6,514.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,699.57 : 12,005.44 = 4,720.69 : x
  2. Step 2: Convert to fraction form
    8,699.57/12,005.44 = 4,720.69/x
  3. Step 3: Cross multiply
    8,699.57x = 12,005.44 × 4,720.69
  4. Step 4: Simplify right side
    8,699.57x = 56,673,920.57
  5. Step 5: Solve for x
    x = 56,673,920.57/8,699.57
  6. Step 6: Final answer
    x = 6,514.56

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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.