Home / 8,705.60-12,016.46-5,561.79

Finding the Fourth Proportional to 8,705.60, 12,016.46 and 5,561.79

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Solution

The fourth proportional to 8,705.60, 12,016.46 and 5,561.79 is: 7,677.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,705.60 : 12,016.46 = 5,561.79 : x
  2. Step 2: Convert to fraction form
    8,705.60/12,016.46 = 5,561.79/x
  3. Step 3: Cross multiply
    8,705.60x = 12,016.46 × 5,561.79
  4. Step 4: Simplify right side
    8,705.60x = 66,833,027.06
  5. Step 5: Solve for x
    x = 66,833,027.06/8,705.60
  6. Step 6: Final answer
    x = 7,677.02

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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.