Home / 8,719.58-12,038.81-6,699.39

Finding the Fourth Proportional to 8,719.58, 12,038.81 and 6,699.39

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Solution

The fourth proportional to 8,719.58, 12,038.81 and 6,699.39 is: 9,249.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,719.58 : 12,038.81 = 6,699.39 : x
  2. Step 2: Convert to fraction form
    8,719.58/12,038.81 = 6,699.39/x
  3. Step 3: Cross multiply
    8,719.58x = 12,038.81 × 6,699.39
  4. Step 4: Simplify right side
    8,719.58x = 80,652,683.33
  5. Step 5: Solve for x
    x = 80,652,683.33/8,719.58
  6. Step 6: Final answer
    x = 9,249.61

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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.