Home / 1,389.51-2,077.99-1,060.54

Finding the Fourth Proportional to 1,389.51, 2,077.99 and 1,060.54

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Solution

The fourth proportional to 1,389.51, 2,077.99 and 1,060.54 is: 1,586.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389.51 : 2,077.99 = 1,060.54 : x
  2. Step 2: Convert to fraction form
    1,389.51/2,077.99 = 1,060.54/x
  3. Step 3: Cross multiply
    1,389.51x = 2,077.99 × 1,060.54
  4. Step 4: Simplify right side
    1,389.51x = 2,203,791.51
  5. Step 5: Solve for x
    x = 2,203,791.51/1,389.51
  6. Step 6: Final answer
    x = 1,586.02

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.