Home / 1,718.85-2,371.98-972.80

Finding the Fourth Proportional to 1,718.85, 2,371.98 and 972.80

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Solution

The fourth proportional to 1,718.85, 2,371.98 and 972.80 is: 1,342.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,718.85 : 2,371.98 = 972.80 : x
  2. Step 2: Convert to fraction form
    1,718.85/2,371.98 = 972.80/x
  3. Step 3: Cross multiply
    1,718.85x = 2,371.98 × 972.80
  4. Step 4: Simplify right side
    1,718.85x = 2,307,450.28
  5. Step 5: Solve for x
    x = 2,307,450.28/1,718.85
  6. Step 6: Final answer
    x = 1,342.44

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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.