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Finding the Fourth Proportional to 2,393.58, 3,590.32 and 638.60

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Solution

The fourth proportional to 2,393.58, 3,590.32 and 638.60 is: 957.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,393.58 : 3,590.32 = 638.60 : x
  2. Step 2: Convert to fraction form
    2,393.58/3,590.32 = 638.60/x
  3. Step 3: Cross multiply
    2,393.58x = 3,590.32 × 638.60
  4. Step 4: Simplify right side
    2,393.58x = 2,292,778.35
  5. Step 5: Solve for x
    x = 2,292,778.35/2,393.58
  6. Step 6: Final answer
    x = 957.89

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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.