Home / 7,974.35-10,999.70-5,140.67

Finding the Fourth Proportional to 7,974.35, 10,999.70 and 5,140.67

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Solution

The fourth proportional to 7,974.35, 10,999.70 and 5,140.67 is: 7,090.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,974.35 : 10,999.70 = 5,140.67 : x
  2. Step 2: Convert to fraction form
    7,974.35/10,999.70 = 5,140.67/x
  3. Step 3: Cross multiply
    7,974.35x = 10,999.70 × 5,140.67
  4. Step 4: Simplify right side
    7,974.35x = 56,545,766.37
  5. Step 5: Solve for x
    x = 56,545,766.37/7,974.35
  6. Step 6: Final answer
    x = 7,090.96

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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.