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Finding the Fourth Proportional to 4,666.40, 6,999.60 and 4,450.40

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Solution

The fourth proportional to 4,666.40, 6,999.60 and 4,450.40 is: 6,675.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,666.40 : 6,999.60 = 4,450.40 : x
  2. Step 2: Convert to fraction form
    4,666.40/6,999.60 = 4,450.40/x
  3. Step 3: Cross multiply
    4,666.40x = 6,999.60 × 4,450.40
  4. Step 4: Simplify right side
    4,666.40x = 31,151,019.84
  5. Step 5: Solve for x
    x = 31,151,019.84/4,666.40
  6. Step 6: Final answer
    x = 6,675.60

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Similar ratio
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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.