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Finding the Fourth Proportional to 1,856.03, 2,784.35 and 881.80

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Solution

The fourth proportional to 1,856.03, 2,784.35 and 881.80 is: 1,322.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,856.03 : 2,784.35 = 881.80 : x
  2. Step 2: Convert to fraction form
    1,856.03/2,784.35 = 881.80/x
  3. Step 3: Cross multiply
    1,856.03x = 2,784.35 × 881.80
  4. Step 4: Simplify right side
    1,856.03x = 2,455,235.42
  5. Step 5: Solve for x
    x = 2,455,235.42/1,856.03
  6. Step 6: Final answer
    x = 1,322.85

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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.