Home / 5,308.38-7,328.88-3,420.90

Finding the Fourth Proportional to 5,308.38, 7,328.88 and 3,420.90

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Solution

The fourth proportional to 5,308.38, 7,328.88 and 3,420.90 is: 4,722.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,308.38 : 7,328.88 = 3,420.90 : x
  2. Step 2: Convert to fraction form
    5,308.38/7,328.88 = 3,420.90/x
  3. Step 3: Cross multiply
    5,308.38x = 7,328.88 × 3,420.90
  4. Step 4: Simplify right side
    5,308.38x = 25,071,365.59
  5. Step 5: Solve for x
    x = 25,071,365.59/5,308.38
  6. Step 6: Final answer
    x = 4,722.98

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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.