Home / 9,318.86-12,860.12-5,339.88

Finding the Fourth Proportional to 9,318.86, 12,860.12 and 5,339.88

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Solution

The fourth proportional to 9,318.86, 12,860.12 and 5,339.88 is: 7,369.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,318.86 : 12,860.12 = 5,339.88 : x
  2. Step 2: Convert to fraction form
    9,318.86/12,860.12 = 5,339.88/x
  3. Step 3: Cross multiply
    9,318.86x = 12,860.12 × 5,339.88
  4. Step 4: Simplify right side
    9,318.86x = 68,671,497.59
  5. Step 5: Solve for x
    x = 68,671,497.59/9,318.86
  6. Step 6: Final answer
    x = 7,369.09

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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.