Home / 2,120.65-2,926.73-1,237.01

Finding the Fourth Proportional to 2,120.65, 2,926.73 and 1,237.01

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Solution

The fourth proportional to 2,120.65, 2,926.73 and 1,237.01 is: 1,707.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,120.65 : 2,926.73 = 1,237.01 : x
  2. Step 2: Convert to fraction form
    2,120.65/2,926.73 = 1,237.01/x
  3. Step 3: Cross multiply
    2,120.65x = 2,926.73 × 1,237.01
  4. Step 4: Simplify right side
    2,120.65x = 3,620,382.74
  5. Step 5: Solve for x
    x = 3,620,382.74/2,120.65
  6. Step 6: Final answer
    x = 1,707.21

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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.