Home / 1,127.36-1,555.66-629.93

Finding the Fourth Proportional to 1,127.36, 1,555.66 and 629.93

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Solution

The fourth proportional to 1,127.36, 1,555.66 and 629.93 is: 869.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,127.36 : 1,555.66 = 629.93 : x
  2. Step 2: Convert to fraction form
    1,127.36/1,555.66 = 629.93/x
  3. Step 3: Cross multiply
    1,127.36x = 1,555.66 × 629.93
  4. Step 4: Simplify right side
    1,127.36x = 979,953.75
  5. Step 5: Solve for x
    x = 979,953.75/1,127.36
  6. Step 6: Final answer
    x = 869.25

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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.