Home / 7,518.93-11,272.31-3,139.67

Finding the Fourth Proportional to 7,518.93, 11,272.31 and 3,139.67

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Solution

The fourth proportional to 7,518.93, 11,272.31 and 3,139.67 is: 4,706.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,518.93 : 11,272.31 = 3,139.67 : x
  2. Step 2: Convert to fraction form
    7,518.93/11,272.31 = 3,139.67/x
  3. Step 3: Cross multiply
    7,518.93x = 11,272.31 × 3,139.67
  4. Step 4: Simplify right side
    7,518.93x = 35,391,277.18
  5. Step 5: Solve for x
    x = 35,391,277.18/7,518.93
  6. Step 6: Final answer
    x = 4,706.96

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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.