Home / 7,129.10-10,705.80-3,848.60

Finding the Fourth Proportional to 7,129.10, 10,705.80 and 3,848.60

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Solution

The fourth proportional to 7,129.10, 10,705.80 and 3,848.60 is: 5,779.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,129.10 : 10,705.80 = 3,848.60 : x
  2. Step 2: Convert to fraction form
    7,129.10/10,705.80 = 3,848.60/x
  3. Step 3: Cross multiply
    7,129.10x = 10,705.80 × 3,848.60
  4. Step 4: Simplify right side
    7,129.10x = 41,202,341.88
  5. Step 5: Solve for x
    x = 41,202,341.88/7,129.10
  6. Step 6: Final answer
    x = 5,779.46

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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.