Home / 1,107.12-1,529.38-1,048.80

Finding the Fourth Proportional to 1,107.12, 1,529.38 and 1,048.80

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Solution

The fourth proportional to 1,107.12, 1,529.38 and 1,048.80 is: 1,448.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,107.12 : 1,529.38 = 1,048.80 : x
  2. Step 2: Convert to fraction form
    1,107.12/1,529.38 = 1,048.80/x
  3. Step 3: Cross multiply
    1,107.12x = 1,529.38 × 1,048.80
  4. Step 4: Simplify right side
    1,107.12x = 1,604,013.74
  5. Step 5: Solve for x
    x = 1,604,013.74/1,107.12
  6. Step 6: Final answer
    x = 1,448.82

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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.