Home / 4,705.12-7,054.80-1,780.30

Finding the Fourth Proportional to 4,705.12, 7,054.80 and 1,780.30

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Solution

The fourth proportional to 4,705.12, 7,054.80 and 1,780.30 is: 2,669.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,705.12 : 7,054.80 = 1,780.30 : x
  2. Step 2: Convert to fraction form
    4,705.12/7,054.80 = 1,780.30/x
  3. Step 3: Cross multiply
    4,705.12x = 7,054.80 × 1,780.30
  4. Step 4: Simplify right side
    4,705.12x = 12,559,660.44
  5. Step 5: Solve for x
    x = 12,559,660.44/4,705.12
  6. Step 6: Final answer
    x = 2,669.36

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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.