Home / 8,921.02-12,311.01-5,561.83

Finding the Fourth Proportional to 8,921.02, 12,311.01 and 5,561.83

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Solution

The fourth proportional to 8,921.02, 12,311.01 and 5,561.83 is: 7,675.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,921.02 : 12,311.01 = 5,561.83 : x
  2. Step 2: Convert to fraction form
    8,921.02/12,311.01 = 5,561.83/x
  3. Step 3: Cross multiply
    8,921.02x = 12,311.01 × 5,561.83
  4. Step 4: Simplify right side
    8,921.02x = 68,471,744.75
  5. Step 5: Solve for x
    x = 68,471,744.75/8,921.02
  6. Step 6: Final answer
    x = 7,675.33

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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.