Home / 7,428.51-11,143.47-2,091.67

Finding the Fourth Proportional to 7,428.51, 11,143.47 and 2,091.67

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Solution

The fourth proportional to 7,428.51, 11,143.47 and 2,091.67 is: 3,137.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,428.51 : 11,143.47 = 2,091.67 : x
  2. Step 2: Convert to fraction form
    7,428.51/11,143.47 = 2,091.67/x
  3. Step 3: Cross multiply
    7,428.51x = 11,143.47 × 2,091.67
  4. Step 4: Simplify right side
    7,428.51x = 23,308,395.72
  5. Step 5: Solve for x
    x = 23,308,395.72/7,428.51
  6. Step 6: Final answer
    x = 3,137.70

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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.