Home / 9,336.78-12,884.76-5,145.03

Finding the Fourth Proportional to 9,336.78, 12,884.76 and 5,145.03

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Solution

The fourth proportional to 9,336.78, 12,884.76 and 5,145.03 is: 7,100.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,336.78 : 12,884.76 = 5,145.03 : x
  2. Step 2: Convert to fraction form
    9,336.78/12,884.76 = 5,145.03/x
  3. Step 3: Cross multiply
    9,336.78x = 12,884.76 × 5,145.03
  4. Step 4: Simplify right side
    9,336.78x = 66,292,476.74
  5. Step 5: Solve for x
    x = 66,292,476.74/9,336.78
  6. Step 6: Final answer
    x = 7,100.14

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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.