Home / 5,611.20-8,416.80-4,574.40

Finding the Fourth Proportional to 5,611.20, 8,416.80 and 4,574.40

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Solution

The fourth proportional to 5,611.20, 8,416.80 and 4,574.40 is: 6,861.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,611.20 : 8,416.80 = 4,574.40 : x
  2. Step 2: Convert to fraction form
    5,611.20/8,416.80 = 4,574.40/x
  3. Step 3: Cross multiply
    5,611.20x = 8,416.80 × 4,574.40
  4. Step 4: Simplify right side
    5,611.20x = 38,501,809.92
  5. Step 5: Solve for x
    x = 38,501,809.92/5,611.20
  6. Step 6: Final answer
    x = 6,861.60

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