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Finding the Fourth Proportional to 2,315.44, 3,473.08 and 928.40

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Solution

The fourth proportional to 2,315.44, 3,473.08 and 928.40 is: 1,392.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,315.44 : 3,473.08 = 928.40 : x
  2. Step 2: Convert to fraction form
    2,315.44/3,473.08 = 928.40/x
  3. Step 3: Cross multiply
    2,315.44x = 3,473.08 × 928.40
  4. Step 4: Simplify right side
    2,315.44x = 3,224,417.09
  5. Step 5: Solve for x
    x = 3,224,417.09/2,315.44
  6. Step 6: Final answer
    x = 1,392.57

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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.