Home / 4,590.78-6,881.50-1,815.90

Finding the Fourth Proportional to 4,590.78, 6,881.50 and 1,815.90

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Solution

The fourth proportional to 4,590.78, 6,881.50 and 1,815.90 is: 2,722.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,590.78 : 6,881.50 = 1,815.90 : x
  2. Step 2: Convert to fraction form
    4,590.78/6,881.50 = 1,815.90/x
  3. Step 3: Cross multiply
    4,590.78x = 6,881.50 × 1,815.90
  4. Step 4: Simplify right side
    4,590.78x = 12,496,115.85
  5. Step 5: Solve for x
    x = 12,496,115.85/4,590.78
  6. Step 6: Final answer
    x = 2,722.00

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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.