Home / 9,194.78-12,688.72-5,215.93

Finding the Fourth Proportional to 9,194.78, 12,688.72 and 5,215.93

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Solution

The fourth proportional to 9,194.78, 12,688.72 and 5,215.93 is: 7,197.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,194.78 : 12,688.72 = 5,215.93 : x
  2. Step 2: Convert to fraction form
    9,194.78/12,688.72 = 5,215.93/x
  3. Step 3: Cross multiply
    9,194.78x = 12,688.72 × 5,215.93
  4. Step 4: Simplify right side
    9,194.78x = 66,183,430.55
  5. Step 5: Solve for x
    x = 66,183,430.55/9,194.78
  6. Step 6: Final answer
    x = 7,197.93

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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.