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Finding the Fourth Proportional to 4,739.70, 6,645.30 and 4,739.70

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Solution

The fourth proportional to 4,739.70, 6,645.30 and 4,739.70 is: 6,645.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,739.70 : 6,645.30 = 4,739.70 : x
  2. Step 2: Convert to fraction form
    4,739.70/6,645.30 = 4,739.70/x
  3. Step 3: Cross multiply
    4,739.70x = 6,645.30 × 4,739.70
  4. Step 4: Simplify right side
    4,739.70x = 31,496,728.41
  5. Step 5: Solve for x
    x = 31,496,728.41/4,739.70
  6. Step 6: Final answer
    x = 6,645.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.