Home / 5,272.31-7,907.55-1,985.43

Finding the Fourth Proportional to 5,272.31, 7,907.55 and 1,985.43

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Solution

The fourth proportional to 5,272.31, 7,907.55 and 1,985.43 is: 2,977.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,272.31 : 7,907.55 = 1,985.43 : x
  2. Step 2: Convert to fraction form
    5,272.31/7,907.55 = 1,985.43/x
  3. Step 3: Cross multiply
    5,272.31x = 7,907.55 × 1,985.43
  4. Step 4: Simplify right side
    5,272.31x = 15,699,887.00
  5. Step 5: Solve for x
    x = 15,699,887.00/5,272.31
  6. Step 6: Final answer
    x = 2,977.80

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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.