Home / 8,918.22-12,308.58-5,783.52

Finding the Fourth Proportional to 8,918.22, 12,308.58 and 5,783.52

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Solution

The fourth proportional to 8,918.22, 12,308.58 and 5,783.52 is: 7,982.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,918.22 : 12,308.58 = 5,783.52 : x
  2. Step 2: Convert to fraction form
    8,918.22/12,308.58 = 5,783.52/x
  3. Step 3: Cross multiply
    8,918.22x = 12,308.58 × 5,783.52
  4. Step 4: Simplify right side
    8,918.22x = 71,186,918.60
  5. Step 5: Solve for x
    x = 71,186,918.60/8,918.22
  6. Step 6: Final answer
    x = 7,982.19

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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.