Home / 9,171.86-12,639.02-6,511.82

Finding the Fourth Proportional to 9,171.86, 12,639.02 and 6,511.82

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Solution

The fourth proportional to 9,171.86, 12,639.02 and 6,511.82 is: 8,973.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,171.86 : 12,639.02 = 6,511.82 : x
  2. Step 2: Convert to fraction form
    9,171.86/12,639.02 = 6,511.82/x
  3. Step 3: Cross multiply
    9,171.86x = 12,639.02 × 6,511.82
  4. Step 4: Simplify right side
    9,171.86x = 82,303,071.09
  5. Step 5: Solve for x
    x = 82,303,071.09/9,171.86
  6. Step 6: Final answer
    x = 8,973.43

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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.