Home / 8,940.49-12,350.75-7,145.67

Finding the Fourth Proportional to 8,940.49, 12,350.75 and 7,145.67

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Solution

The fourth proportional to 8,940.49, 12,350.75 and 7,145.67 is: 9,871.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,940.49 : 12,350.75 = 7,145.67 : x
  2. Step 2: Convert to fraction form
    8,940.49/12,350.75 = 7,145.67/x
  3. Step 3: Cross multiply
    8,940.49x = 12,350.75 × 7,145.67
  4. Step 4: Simplify right side
    8,940.49x = 88,254,383.75
  5. Step 5: Solve for x
    x = 88,254,383.75/8,940.49
  6. Step 6: Final answer
    x = 9,871.31

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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.