Home / 5,381.48-7,428.54-3,391.64

Finding the Fourth Proportional to 5,381.48, 7,428.54 and 3,391.64

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Solution

The fourth proportional to 5,381.48, 7,428.54 and 3,391.64 is: 4,681.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,381.48 : 7,428.54 = 3,391.64 : x
  2. Step 2: Convert to fraction form
    5,381.48/7,428.54 = 3,391.64/x
  3. Step 3: Cross multiply
    5,381.48x = 7,428.54 × 3,391.64
  4. Step 4: Simplify right side
    5,381.48x = 25,194,933.41
  5. Step 5: Solve for x
    x = 25,194,933.41/5,381.48
  6. Step 6: Final answer
    x = 4,681.79

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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.