Home / 4,391.89-6,590.40-1,620.49

Finding the Fourth Proportional to 4,391.89, 6,590.40 and 1,620.49

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Solution

The fourth proportional to 4,391.89, 6,590.40 and 1,620.49 is: 2,431.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,391.89 : 6,590.40 = 1,620.49 : x
  2. Step 2: Convert to fraction form
    4,391.89/6,590.40 = 1,620.49/x
  3. Step 3: Cross multiply
    4,391.89x = 6,590.40 × 1,620.49
  4. Step 4: Simplify right side
    4,391.89x = 10,679,680.77
  5. Step 5: Solve for x
    x = 10,679,680.77/4,391.89
  6. Step 6: Final answer
    x = 2,431.68

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1.5x scale

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.