Home / 1,655.31-2,485.14-1,109.94

Finding the Fourth Proportional to 1,655.31, 2,485.14 and 1,109.94

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Solution

The fourth proportional to 1,655.31, 2,485.14 and 1,109.94 is: 1,666.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,655.31 : 2,485.14 = 1,109.94 : x
  2. Step 2: Convert to fraction form
    1,655.31/2,485.14 = 1,109.94/x
  3. Step 3: Cross multiply
    1,655.31x = 2,485.14 × 1,109.94
  4. Step 4: Simplify right side
    1,655.31x = 2,758,349.05
  5. Step 5: Solve for x
    x = 2,758,349.05/1,655.31
  6. Step 6: Final answer
    x = 1,666.36

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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.