Home / 8,699.38-12,005.20-4,720.54

Finding the Fourth Proportional to 8,699.38, 12,005.20 and 4,720.54

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Solution

The fourth proportional to 8,699.38, 12,005.20 and 4,720.54 is: 6,514.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,699.38 : 12,005.20 = 4,720.54 : x
  2. Step 2: Convert to fraction form
    8,699.38/12,005.20 = 4,720.54/x
  3. Step 3: Cross multiply
    8,699.38x = 12,005.20 × 4,720.54
  4. Step 4: Simplify right side
    8,699.38x = 56,671,026.81
  5. Step 5: Solve for x
    x = 56,671,026.81/8,699.38
  6. Step 6: Final answer
    x = 6,514.38

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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.