Home / 1,409.17-1,942.91-1,077.07

Finding the Fourth Proportional to 1,409.17, 1,942.91 and 1,077.07

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Solution

The fourth proportional to 1,409.17, 1,942.91 and 1,077.07 is: 1,485.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,409.17 : 1,942.91 = 1,077.07 : x
  2. Step 2: Convert to fraction form
    1,409.17/1,942.91 = 1,077.07/x
  3. Step 3: Cross multiply
    1,409.17x = 1,942.91 × 1,077.07
  4. Step 4: Simplify right side
    1,409.17x = 2,092,650.07
  5. Step 5: Solve for x
    x = 2,092,650.07/1,409.17
  6. Step 6: Final answer
    x = 1,485.02

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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.