Home / 1,505.11-2,077.09-842.07

Finding the Fourth Proportional to 1,505.11, 2,077.09 and 842.07

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Solution

The fourth proportional to 1,505.11, 2,077.09 and 842.07 is: 1,162.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,505.11 : 2,077.09 = 842.07 : x
  2. Step 2: Convert to fraction form
    1,505.11/2,077.09 = 842.07/x
  3. Step 3: Cross multiply
    1,505.11x = 2,077.09 × 842.07
  4. Step 4: Simplify right side
    1,505.11x = 1,749,053.07
  5. Step 5: Solve for x
    x = 1,749,053.07/1,505.11
  6. Step 6: Final answer
    x = 1,162.08

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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.