Home / 7,147.53-9,861.97-4,315.36

Finding the Fourth Proportional to 7,147.53, 9,861.97 and 4,315.36

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Solution

The fourth proportional to 7,147.53, 9,861.97 and 4,315.36 is: 5,954.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,147.53 : 9,861.97 = 4,315.36 : x
  2. Step 2: Convert to fraction form
    7,147.53/9,861.97 = 4,315.36/x
  3. Step 3: Cross multiply
    7,147.53x = 9,861.97 × 4,315.36
  4. Step 4: Simplify right side
    7,147.53x = 42,557,950.86
  5. Step 5: Solve for x
    x = 42,557,950.86/7,147.53
  6. Step 6: Final answer
    x = 5,954.22

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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.