Home / 8,920.45-12,308.32-5,383.60

Finding the Fourth Proportional to 8,920.45, 12,308.32 and 5,383.60

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Solution

The fourth proportional to 8,920.45, 12,308.32 and 5,383.60 is: 7,428.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,920.45 : 12,308.32 = 5,383.60 : x
  2. Step 2: Convert to fraction form
    8,920.45/12,308.32 = 5,383.60/x
  3. Step 3: Cross multiply
    8,920.45x = 12,308.32 × 5,383.60
  4. Step 4: Simplify right side
    8,920.45x = 66,263,071.55
  5. Step 5: Solve for x
    x = 66,263,071.55/8,920.45
  6. Step 6: Final answer
    x = 7,428.22

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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.