Home / 4,619.12-6,930.24-1,985.42

Finding the Fourth Proportional to 4,619.12, 6,930.24 and 1,985.42

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Solution

The fourth proportional to 4,619.12, 6,930.24 and 1,985.42 is: 2,978.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,619.12 : 6,930.24 = 1,985.42 : x
  2. Step 2: Convert to fraction form
    4,619.12/6,930.24 = 1,985.42/x
  3. Step 3: Cross multiply
    4,619.12x = 6,930.24 × 1,985.42
  4. Step 4: Simplify right side
    4,619.12x = 13,759,437.10
  5. Step 5: Solve for x
    x = 13,759,437.10/4,619.12
  6. Step 6: Final answer
    x = 2,978.80

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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.