Home / 1,237.12-1,698.80-1,106.08

Finding the Fourth Proportional to 1,237.12, 1,698.80 and 1,106.08

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Solution

The fourth proportional to 1,237.12, 1,698.80 and 1,106.08 is: 1,518.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,237.12 : 1,698.80 = 1,106.08 : x
  2. Step 2: Convert to fraction form
    1,237.12/1,698.80 = 1,106.08/x
  3. Step 3: Cross multiply
    1,237.12x = 1,698.80 × 1,106.08
  4. Step 4: Simplify right side
    1,237.12x = 1,879,008.70
  5. Step 5: Solve for x
    x = 1,879,008.70/1,237.12
  6. Step 6: Final answer
    x = 1,518.86

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.