Home / 5,269.30-7,899.36-1,981.51

Finding the Fourth Proportional to 5,269.30, 7,899.36 and 1,981.51

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Solution

The fourth proportional to 5,269.30, 7,899.36 and 1,981.51 is: 2,970.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,269.30 : 7,899.36 = 1,981.51 : x
  2. Step 2: Convert to fraction form
    5,269.30/7,899.36 = 1,981.51/x
  3. Step 3: Cross multiply
    5,269.30x = 7,899.36 × 1,981.51
  4. Step 4: Simplify right side
    5,269.30x = 15,652,660.83
  5. Step 5: Solve for x
    x = 15,652,660.83/5,269.30
  6. Step 6: Final answer
    x = 2,970.54

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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.