Home / 5,490.52-8,235.76-1,386.52

Finding the Fourth Proportional to 5,490.52, 8,235.76 and 1,386.52

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Solution

The fourth proportional to 5,490.52, 8,235.76 and 1,386.52 is: 2,079.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,490.52 : 8,235.76 = 1,386.52 : x
  2. Step 2: Convert to fraction form
    5,490.52/8,235.76 = 1,386.52/x
  3. Step 3: Cross multiply
    5,490.52x = 8,235.76 × 1,386.52
  4. Step 4: Simplify right side
    5,490.52x = 11,419,045.96
  5. Step 5: Solve for x
    x = 11,419,045.96/5,490.52
  6. Step 6: Final answer
    x = 2,079.77

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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.