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Finding the Fourth Proportional to 2,878.52, 4,317.84 and 930.92

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Solution

The fourth proportional to 2,878.52, 4,317.84 and 930.92 is: 1,396.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,878.52 : 4,317.84 = 930.92 : x
  2. Step 2: Convert to fraction form
    2,878.52/4,317.84 = 930.92/x
  3. Step 3: Cross multiply
    2,878.52x = 4,317.84 × 930.92
  4. Step 4: Simplify right side
    2,878.52x = 4,019,563.61
  5. Step 5: Solve for x
    x = 4,019,563.61/2,878.52
  6. Step 6: Final answer
    x = 1,396.40

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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.