Home / 7,421.07-11,128.96-2,740.08

Finding the Fourth Proportional to 7,421.07, 11,128.96 and 2,740.08

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Solution

The fourth proportional to 7,421.07, 11,128.96 and 2,740.08 is: 4,109.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,421.07 : 11,128.96 = 2,740.08 : x
  2. Step 2: Convert to fraction form
    7,421.07/11,128.96 = 2,740.08/x
  3. Step 3: Cross multiply
    7,421.07x = 11,128.96 × 2,740.08
  4. Step 4: Simplify right side
    7,421.07x = 30,494,240.72
  5. Step 5: Solve for x
    x = 30,494,240.72/7,421.07
  6. Step 6: Final answer
    x = 4,109.14

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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.