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Finding the Fourth Proportional to 2,655.36, 3,981.96 and 899.82

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Solution

The fourth proportional to 2,655.36, 3,981.96 and 899.82 is: 1,349.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,655.36 : 3,981.96 = 899.82 : x
  2. Step 2: Convert to fraction form
    2,655.36/3,981.96 = 899.82/x
  3. Step 3: Cross multiply
    2,655.36x = 3,981.96 × 899.82
  4. Step 4: Simplify right side
    2,655.36x = 3,583,047.25
  5. Step 5: Solve for x
    x = 3,583,047.25/2,655.36
  6. Step 6: Final answer
    x = 1,349.36

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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.