Home / 3,118.52-4,678.32-1,038.80

Finding the Fourth Proportional to 3,118.52, 4,678.32 and 1,038.80

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Solution

The fourth proportional to 3,118.52, 4,678.32 and 1,038.80 is: 1,558.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,118.52 : 4,678.32 = 1,038.80 : x
  2. Step 2: Convert to fraction form
    3,118.52/4,678.32 = 1,038.80/x
  3. Step 3: Cross multiply
    3,118.52x = 4,678.32 × 1,038.80
  4. Step 4: Simplify right side
    3,118.52x = 4,859,838.82
  5. Step 5: Solve for x
    x = 4,859,838.82/3,118.52
  6. Step 6: Final answer
    x = 1,558.38

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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.