Home / 1,111.45-1,533.87-614.09

Finding the Fourth Proportional to 1,111.45, 1,533.87 and 614.09

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Solution

The fourth proportional to 1,111.45, 1,533.87 and 614.09 is: 847.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,111.45 : 1,533.87 = 614.09 : x
  2. Step 2: Convert to fraction form
    1,111.45/1,533.87 = 614.09/x
  3. Step 3: Cross multiply
    1,111.45x = 1,533.87 × 614.09
  4. Step 4: Simplify right side
    1,111.45x = 941,934.23
  5. Step 5: Solve for x
    x = 941,934.23/1,111.45
  6. Step 6: Final answer
    x = 847.48

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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.