Home / 5,384.25-7,430.67-3,288.78

Finding the Fourth Proportional to 5,384.25, 7,430.67 and 3,288.78

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Solution

The fourth proportional to 5,384.25, 7,430.67 and 3,288.78 is: 4,538.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,384.25 : 7,430.67 = 3,288.78 : x
  2. Step 2: Convert to fraction form
    5,384.25/7,430.67 = 3,288.78/x
  3. Step 3: Cross multiply
    5,384.25x = 7,430.67 × 3,288.78
  4. Step 4: Simplify right side
    5,384.25x = 24,437,838.88
  5. Step 5: Solve for x
    x = 24,437,838.88/5,384.25
  6. Step 6: Final answer
    x = 4,538.76

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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.