Home / 8,920.86-12,316.44-5,735.64

Finding the Fourth Proportional to 8,920.86, 12,316.44 and 5,735.64

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Solution

The fourth proportional to 8,920.86, 12,316.44 and 5,735.64 is: 7,918.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,920.86 : 12,316.44 = 5,735.64 : x
  2. Step 2: Convert to fraction form
    8,920.86/12,316.44 = 5,735.64/x
  3. Step 3: Cross multiply
    8,920.86x = 12,316.44 × 5,735.64
  4. Step 4: Simplify right side
    8,920.86x = 70,642,665.92
  5. Step 5: Solve for x
    x = 70,642,665.92/8,920.86
  6. Step 6: Final answer
    x = 7,918.82

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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.