Home / 1,611.40-2,428.08-1,325.31

Finding the Fourth Proportional to 1,611.40, 2,428.08 and 1,325.31

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Solution

The fourth proportional to 1,611.40, 2,428.08 and 1,325.31 is: 1,997.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,611.40 : 2,428.08 = 1,325.31 : x
  2. Step 2: Convert to fraction form
    1,611.40/2,428.08 = 1,325.31/x
  3. Step 3: Cross multiply
    1,611.40x = 2,428.08 × 1,325.31
  4. Step 4: Simplify right side
    1,611.40x = 3,217,953.73
  5. Step 5: Solve for x
    x = 3,217,953.73/1,611.40
  6. Step 6: Final answer
    x = 1,997.00

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.