Home / 1,139.90-1,707.62-1,015.93

Finding the Fourth Proportional to 1,139.90, 1,707.62 and 1,015.93

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Solution

The fourth proportional to 1,139.90, 1,707.62 and 1,015.93 is: 1,521.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,139.90 : 1,707.62 = 1,015.93 : x
  2. Step 2: Convert to fraction form
    1,139.90/1,707.62 = 1,015.93/x
  3. Step 3: Cross multiply
    1,139.90x = 1,707.62 × 1,015.93
  4. Step 4: Simplify right side
    1,139.90x = 1,734,821.33
  5. Step 5: Solve for x
    x = 1,734,821.33/1,139.90
  6. Step 6: Final answer
    x = 1,521.91

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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.