Home / 7,112.08-9,813.54-4,128.04

Finding the Fourth Proportional to 7,112.08, 9,813.54 and 4,128.04

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Solution

The fourth proportional to 7,112.08, 9,813.54 and 4,128.04 is: 5,696.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,112.08 : 9,813.54 = 4,128.04 : x
  2. Step 2: Convert to fraction form
    7,112.08/9,813.54 = 4,128.04/x
  3. Step 3: Cross multiply
    7,112.08x = 9,813.54 × 4,128.04
  4. Step 4: Simplify right side
    7,112.08x = 40,510,685.66
  5. Step 5: Solve for x
    x = 40,510,685.66/7,112.08
  6. Step 6: Final answer
    x = 5,696.04

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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.