Home / 6,628.78-9,146.74-4,111.90

Finding the Fourth Proportional to 6,628.78, 9,146.74 and 4,111.90

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Solution

The fourth proportional to 6,628.78, 9,146.74 and 4,111.90 is: 5,673.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,628.78 : 9,146.74 = 4,111.90 : x
  2. Step 2: Convert to fraction form
    6,628.78/9,146.74 = 4,111.90/x
  3. Step 3: Cross multiply
    6,628.78x = 9,146.74 × 4,111.90
  4. Step 4: Simplify right side
    6,628.78x = 37,610,480.21
  5. Step 5: Solve for x
    x = 37,610,480.21/6,628.78
  6. Step 6: Final answer
    x = 5,673.82

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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.