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Finding the Fourth Proportional to 2,874.83, 4,311.63 and 926.51

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Solution

The fourth proportional to 2,874.83, 4,311.63 and 926.51 is: 1,389.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,874.83 : 4,311.63 = 926.51 : x
  2. Step 2: Convert to fraction form
    2,874.83/4,311.63 = 926.51/x
  3. Step 3: Cross multiply
    2,874.83x = 4,311.63 × 926.51
  4. Step 4: Simplify right side
    2,874.83x = 3,994,746.75
  5. Step 5: Solve for x
    x = 3,994,746.75/2,874.83
  6. Step 6: Final answer
    x = 1,389.56

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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.