Home / 9,399.76-12,972.09-5,207.74

Finding the Fourth Proportional to 9,399.76, 12,972.09 and 5,207.74

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Solution

The fourth proportional to 9,399.76, 12,972.09 and 5,207.74 is: 7,186.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,399.76 : 12,972.09 = 5,207.74 : x
  2. Step 2: Convert to fraction form
    9,399.76/12,972.09 = 5,207.74/x
  3. Step 3: Cross multiply
    9,399.76x = 12,972.09 × 5,207.74
  4. Step 4: Simplify right side
    9,399.76x = 67,555,271.98
  5. Step 5: Solve for x
    x = 67,555,271.98/9,399.76
  6. Step 6: Final answer
    x = 7,186.91

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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.