Home / 9,336.80-12,884.78-5,145.06

Finding the Fourth Proportional to 9,336.80, 12,884.78 and 5,145.06

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Solution

The fourth proportional to 9,336.80, 12,884.78 and 5,145.06 is: 7,100.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,336.80 : 12,884.78 = 5,145.06 : x
  2. Step 2: Convert to fraction form
    9,336.80/12,884.78 = 5,145.06/x
  3. Step 3: Cross multiply
    9,336.80x = 12,884.78 × 5,145.06
  4. Step 4: Simplify right side
    9,336.80x = 66,292,966.19
  5. Step 5: Solve for x
    x = 66,292,966.19/9,336.80
  6. Step 6: Final answer
    x = 7,100.18

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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.