Home / 7,155.99-9,873.24-4,638.21

Finding the Fourth Proportional to 7,155.99, 9,873.24 and 4,638.21

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Solution

The fourth proportional to 7,155.99, 9,873.24 and 4,638.21 is: 6,399.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,155.99 : 9,873.24 = 4,638.21 : x
  2. Step 2: Convert to fraction form
    7,155.99/9,873.24 = 4,638.21/x
  3. Step 3: Cross multiply
    7,155.99x = 9,873.24 × 4,638.21
  4. Step 4: Simplify right side
    7,155.99x = 45,794,140.87
  5. Step 5: Solve for x
    x = 45,794,140.87/7,155.99
  6. Step 6: Final answer
    x = 6,399.41

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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.