Home / 1,972.17-2,719.80-1,225.89

Finding the Fourth Proportional to 1,972.17, 2,719.80 and 1,225.89

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Solution

The fourth proportional to 1,972.17, 2,719.80 and 1,225.89 is: 1,690.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,972.17 : 2,719.80 = 1,225.89 : x
  2. Step 2: Convert to fraction form
    1,972.17/2,719.80 = 1,225.89/x
  3. Step 3: Cross multiply
    1,972.17x = 2,719.80 × 1,225.89
  4. Step 4: Simplify right side
    1,972.17x = 3,334,175.62
  5. Step 5: Solve for x
    x = 3,334,175.62/1,972.17
  6. Step 6: Final answer
    x = 1,690.61

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.