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Finding the Fourth Proportional to 3,315.92, 4,973.12 and 1,368.72

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Solution

The fourth proportional to 3,315.92, 4,973.12 and 1,368.72 is: 2,052.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,315.92 : 4,973.12 = 1,368.72 : x
  2. Step 2: Convert to fraction form
    3,315.92/4,973.12 = 1,368.72/x
  3. Step 3: Cross multiply
    3,315.92x = 4,973.12 × 1,368.72
  4. Step 4: Simplify right side
    3,315.92x = 6,806,808.81
  5. Step 5: Solve for x
    x = 6,806,808.81/3,315.92
  6. Step 6: Final answer
    x = 2,052.77

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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.