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Finding the Fourth Proportional to 5,685.60, 8,518.80 and 3,736.80

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Solution

The fourth proportional to 5,685.60, 8,518.80 and 3,736.80 is: 5,598.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,685.60 : 8,518.80 = 3,736.80 : x
  2. Step 2: Convert to fraction form
    5,685.60/8,518.80 = 3,736.80/x
  3. Step 3: Cross multiply
    5,685.60x = 8,518.80 × 3,736.80
  4. Step 4: Simplify right side
    5,685.60x = 31,833,051.84
  5. Step 5: Solve for x
    x = 31,833,051.84/5,685.60
  6. Step 6: Final answer
    x = 5,598.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.