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Finding the Fourth Proportional to 5,600.40, 8,400.60 and 1,903.60

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Solution

The fourth proportional to 5,600.40, 8,400.60 and 1,903.60 is: 2,855.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,600.40 : 8,400.60 = 1,903.60 : x
  2. Step 2: Convert to fraction form
    5,600.40/8,400.60 = 1,903.60/x
  3. Step 3: Cross multiply
    5,600.40x = 8,400.60 × 1,903.60
  4. Step 4: Simplify right side
    5,600.40x = 15,991,382.16
  5. Step 5: Solve for x
    x = 15,991,382.16/5,600.40
  6. Step 6: Final answer
    x = 2,855.40

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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.