Home / 7,109.15-9,812.58-4,125.94

Finding the Fourth Proportional to 7,109.15, 9,812.58 and 4,125.94

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Solution

The fourth proportional to 7,109.15, 9,812.58 and 4,125.94 is: 5,694.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,109.15 : 9,812.58 = 4,125.94 : x
  2. Step 2: Convert to fraction form
    7,109.15/9,812.58 = 4,125.94/x
  3. Step 3: Cross multiply
    7,109.15x = 9,812.58 × 4,125.94
  4. Step 4: Simplify right side
    7,109.15x = 40,486,076.32
  5. Step 5: Solve for x
    x = 40,486,076.32/7,109.15
  6. Step 6: Final answer
    x = 5,694.93

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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.