Home / 9,147.94-12,628.52-6,128.26

Finding the Fourth Proportional to 9,147.94, 12,628.52 and 6,128.26

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Solution

The fourth proportional to 9,147.94, 12,628.52 and 6,128.26 is: 8,459.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,147.94 : 12,628.52 = 6,128.26 : x
  2. Step 2: Convert to fraction form
    9,147.94/12,628.52 = 6,128.26/x
  3. Step 3: Cross multiply
    9,147.94x = 12,628.52 × 6,128.26
  4. Step 4: Simplify right side
    9,147.94x = 77,390,853.98
  5. Step 5: Solve for x
    x = 77,390,853.98/9,147.94
  6. Step 6: Final answer
    x = 8,459.92

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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.