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Finding the Fourth Proportional to 5,535, 8,302.57 and 1,431

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Solution

The fourth proportional to 5,535, 8,302.57 and 1,431 is: 2,146.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,535 : 8,302.57 = 1,431 : x
  2. Step 2: Convert to fraction form
    5,535/8,302.57 = 1,431/x
  3. Step 3: Cross multiply
    5,535x = 8,302.57 × 1,431
  4. Step 4: Simplify right side
    5,535x = 11,880,974.09
  5. Step 5: Solve for x
    x = 11,880,974.09/5,535
  6. Step 6: Final answer
    x = 2,146.52

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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.