Home / 2,972.78-4,459.40-1,329.49

Finding the Fourth Proportional to 2,972.78, 4,459.40 and 1,329.49

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Solution

The fourth proportional to 2,972.78, 4,459.40 and 1,329.49 is: 1,994.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,972.78 : 4,459.40 = 1,329.49 : x
  2. Step 2: Convert to fraction form
    2,972.78/4,459.40 = 1,329.49/x
  3. Step 3: Cross multiply
    2,972.78x = 4,459.40 × 1,329.49
  4. Step 4: Simplify right side
    2,972.78x = 5,928,727.71
  5. Step 5: Solve for x
    x = 5,928,727.71/2,972.78
  6. Step 6: Final answer
    x = 1,994.34

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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.