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Finding the Fourth Proportional to 3,607.40, 5,405.70 and 3,056.60

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Solution

The fourth proportional to 3,607.40, 5,405.70 and 3,056.60 is: 4,580.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,607.40 : 5,405.70 = 3,056.60 : x
  2. Step 2: Convert to fraction form
    3,607.40/5,405.70 = 3,056.60/x
  3. Step 3: Cross multiply
    3,607.40x = 5,405.70 × 3,056.60
  4. Step 4: Simplify right side
    3,607.40x = 16,523,062.62
  5. Step 5: Solve for x
    x = 16,523,062.62/3,607.40
  6. Step 6: Final answer
    x = 4,580.32

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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.