Home / 1,687.12-2,533.01-1,165.90

Finding the Fourth Proportional to 1,687.12, 2,533.01 and 1,165.90

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Solution

The fourth proportional to 1,687.12, 2,533.01 and 1,165.90 is: 1,750.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,687.12 : 2,533.01 = 1,165.90 : x
  2. Step 2: Convert to fraction form
    1,687.12/2,533.01 = 1,165.90/x
  3. Step 3: Cross multiply
    1,687.12x = 2,533.01 × 1,165.90
  4. Step 4: Simplify right side
    1,687.12x = 2,953,236.36
  5. Step 5: Solve for x
    x = 2,953,236.36/1,687.12
  6. Step 6: Final answer
    x = 1,750.46

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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.