Home / 7,111.10-10,667.74-3,412.64

Finding the Fourth Proportional to 7,111.10, 10,667.74 and 3,412.64

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Solution

The fourth proportional to 7,111.10, 10,667.74 and 3,412.64 is: 5,119.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,111.10 : 10,667.74 = 3,412.64 : x
  2. Step 2: Convert to fraction form
    7,111.10/10,667.74 = 3,412.64/x
  3. Step 3: Cross multiply
    7,111.10x = 10,667.74 × 3,412.64
  4. Step 4: Simplify right side
    7,111.10x = 36,405,156.23
  5. Step 5: Solve for x
    x = 36,405,156.23/7,111.10
  6. Step 6: Final answer
    x = 5,119.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.