Home / 1,719.76-2,373.42-1,021.36

Finding the Fourth Proportional to 1,719.76, 2,373.42 and 1,021.36

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Solution

The fourth proportional to 1,719.76, 2,373.42 and 1,021.36 is: 1,409.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,719.76 : 2,373.42 = 1,021.36 : x
  2. Step 2: Convert to fraction form
    1,719.76/2,373.42 = 1,021.36/x
  3. Step 3: Cross multiply
    1,719.76x = 2,373.42 × 1,021.36
  4. Step 4: Simplify right side
    1,719.76x = 2,424,116.25
  5. Step 5: Solve for x
    x = 2,424,116.25/1,719.76
  6. Step 6: Final answer
    x = 1,409.57

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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.