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Finding the Fourth Proportional to 2,315.16, 3,472.07 and 928.05

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Solution

The fourth proportional to 2,315.16, 3,472.07 and 928.05 is: 1,391.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,315.16 : 3,472.07 = 928.05 : x
  2. Step 2: Convert to fraction form
    2,315.16/3,472.07 = 928.05/x
  3. Step 3: Cross multiply
    2,315.16x = 3,472.07 × 928.05
  4. Step 4: Simplify right side
    2,315.16x = 3,222,249.92
  5. Step 5: Solve for x
    x = 3,222,249.92/2,315.16
  6. Step 6: Final answer
    x = 1,391.80

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1.5x scale

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.