Home / 8,820.91-12,170.37-5,678.92

Finding the Fourth Proportional to 8,820.91, 12,170.37 and 5,678.92

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Solution

The fourth proportional to 8,820.91, 12,170.37 and 5,678.92 is: 7,835.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,820.91 : 12,170.37 = 5,678.92 : x
  2. Step 2: Convert to fraction form
    8,820.91/12,170.37 = 5,678.92/x
  3. Step 3: Cross multiply
    8,820.91x = 12,170.37 × 5,678.92
  4. Step 4: Simplify right side
    8,820.91x = 69,114,557.60
  5. Step 5: Solve for x
    x = 69,114,557.60/8,820.91
  6. Step 6: Final answer
    x = 7,835.31

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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.