Home / 9,629.88-13,289.24-5,438.40

Finding the Fourth Proportional to 9,629.88, 13,289.24 and 5,438.40

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Solution

The fourth proportional to 9,629.88, 13,289.24 and 5,438.40 is: 7,505.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,629.88 : 13,289.24 = 5,438.40 : x
  2. Step 2: Convert to fraction form
    9,629.88/13,289.24 = 5,438.40/x
  3. Step 3: Cross multiply
    9,629.88x = 13,289.24 × 5,438.40
  4. Step 4: Simplify right side
    9,629.88x = 72,272,202.82
  5. Step 5: Solve for x
    x = 72,272,202.82/9,629.88
  6. Step 6: Final answer
    x = 7,505.00

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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.