Home / 7,130.96-10,688.75-2,969.85

Finding the Fourth Proportional to 7,130.96, 10,688.75 and 2,969.85

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Solution

The fourth proportional to 7,130.96, 10,688.75 and 2,969.85 is: 4,451.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,130.96 : 10,688.75 = 2,969.85 : x
  2. Step 2: Convert to fraction form
    7,130.96/10,688.75 = 2,969.85/x
  3. Step 3: Cross multiply
    7,130.96x = 10,688.75 × 2,969.85
  4. Step 4: Simplify right side
    7,130.96x = 31,743,984.19
  5. Step 5: Solve for x
    x = 31,743,984.19/7,130.96
  6. Step 6: Final answer
    x = 4,451.57

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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.