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Finding the Fourth Proportional to 1,349.96, 1,861.78 and 884.36

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Solution

The fourth proportional to 1,349.96, 1,861.78 and 884.36 is: 1,219.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,349.96 : 1,861.78 = 884.36 : x
  2. Step 2: Convert to fraction form
    1,349.96/1,861.78 = 884.36/x
  3. Step 3: Cross multiply
    1,349.96x = 1,861.78 × 884.36
  4. Step 4: Simplify right side
    1,349.96x = 1,646,483.76
  5. Step 5: Solve for x
    x = 1,646,483.76/1,349.96
  6. Step 6: Final answer
    x = 1,219.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.