Home / 2,972.79-4,459.74-1,329.40

Finding the Fourth Proportional to 2,972.79, 4,459.74 and 1,329.40

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Solution

The fourth proportional to 2,972.79, 4,459.74 and 1,329.40 is: 1,994.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,972.79 : 4,459.74 = 1,329.40 : x
  2. Step 2: Convert to fraction form
    2,972.79/4,459.74 = 1,329.40/x
  3. Step 3: Cross multiply
    2,972.79x = 4,459.74 × 1,329.40
  4. Step 4: Simplify right side
    2,972.79x = 5,928,778.36
  5. Step 5: Solve for x
    x = 5,928,778.36/2,972.79
  6. Step 6: Final answer
    x = 1,994.35

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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.