Home / 7,111.49-9,813.84-4,129.07

Finding the Fourth Proportional to 7,111.49, 9,813.84 and 4,129.07

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Solution

The fourth proportional to 7,111.49, 9,813.84 and 4,129.07 is: 5,698.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,111.49 : 9,813.84 = 4,129.07 : x
  2. Step 2: Convert to fraction form
    7,111.49/9,813.84 = 4,129.07/x
  3. Step 3: Cross multiply
    7,111.49x = 9,813.84 × 4,129.07
  4. Step 4: Simplify right side
    7,111.49x = 40,522,032.33
  5. Step 5: Solve for x
    x = 40,522,032.33/7,111.49
  6. Step 6: Final answer
    x = 5,698.11

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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.