Home / 9,368.77-12,928.68-5,119.86

Finding the Fourth Proportional to 9,368.77, 12,928.68 and 5,119.86

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Solution

The fourth proportional to 9,368.77, 12,928.68 and 5,119.86 is: 7,065.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,368.77 : 12,928.68 = 5,119.86 : x
  2. Step 2: Convert to fraction form
    9,368.77/12,928.68 = 5,119.86/x
  3. Step 3: Cross multiply
    9,368.77x = 12,928.68 × 5,119.86
  4. Step 4: Simplify right side
    9,368.77x = 66,193,031.58
  5. Step 5: Solve for x
    x = 66,193,031.58/9,368.77
  6. Step 6: Final answer
    x = 7,065.29

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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.