Home / 5,438.80-7,501.38-3,645.72

Finding the Fourth Proportional to 5,438.80, 7,501.38 and 3,645.72

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Solution

The fourth proportional to 5,438.80, 7,501.38 and 3,645.72 is: 5,028.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,438.80 : 7,501.38 = 3,645.72 : x
  2. Step 2: Convert to fraction form
    5,438.80/7,501.38 = 3,645.72/x
  3. Step 3: Cross multiply
    5,438.80x = 7,501.38 × 3,645.72
  4. Step 4: Simplify right side
    5,438.80x = 27,347,931.09
  5. Step 5: Solve for x
    x = 27,347,931.09/5,438.80
  6. Step 6: Final answer
    x = 5,028.30

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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.