Home / 1,972.48-2,724.06-1,345.78

Finding the Fourth Proportional to 1,972.48, 2,724.06 and 1,345.78

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Solution

The fourth proportional to 1,972.48, 2,724.06 and 1,345.78 is: 1,858.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,972.48 : 2,724.06 = 1,345.78 : x
  2. Step 2: Convert to fraction form
    1,972.48/2,724.06 = 1,345.78/x
  3. Step 3: Cross multiply
    1,972.48x = 2,724.06 × 1,345.78
  4. Step 4: Simplify right side
    1,972.48x = 3,665,985.47
  5. Step 5: Solve for x
    x = 3,665,985.47/1,972.48
  6. Step 6: Final answer
    x = 1,858.57

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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.