Home / 1,111.24-1,533.62-669.13

Finding the Fourth Proportional to 1,111.24, 1,533.62 and 669.13

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Solution

The fourth proportional to 1,111.24, 1,533.62 and 669.13 is: 923.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,111.24 : 1,533.62 = 669.13 : x
  2. Step 2: Convert to fraction form
    1,111.24/1,533.62 = 669.13/x
  3. Step 3: Cross multiply
    1,111.24x = 1,533.62 × 669.13
  4. Step 4: Simplify right side
    1,111.24x = 1,026,191.15
  5. Step 5: Solve for x
    x = 1,026,191.15/1,111.24
  6. Step 6: Final answer
    x = 923.46

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.