Home / 9,177.81-12,664.35-5,198.07

Finding the Fourth Proportional to 9,177.81, 12,664.35 and 5,198.07

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Solution

The fourth proportional to 9,177.81, 12,664.35 and 5,198.07 is: 7,172.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,177.81 : 12,664.35 = 5,198.07 : x
  2. Step 2: Convert to fraction form
    9,177.81/12,664.35 = 5,198.07/x
  3. Step 3: Cross multiply
    9,177.81x = 12,664.35 × 5,198.07
  4. Step 4: Simplify right side
    9,177.81x = 65,830,225.30
  5. Step 5: Solve for x
    x = 65,830,225.30/9,177.81
  6. Step 6: Final answer
    x = 7,172.76

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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.