Home / 2,370.42-3,555.18-638.64

Finding the Fourth Proportional to 2,370.42, 3,555.18 and 638.64

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Solution

The fourth proportional to 2,370.42, 3,555.18 and 638.64 is: 957.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,370.42 : 3,555.18 = 638.64 : x
  2. Step 2: Convert to fraction form
    2,370.42/3,555.18 = 638.64/x
  3. Step 3: Cross multiply
    2,370.42x = 3,555.18 × 638.64
  4. Step 4: Simplify right side
    2,370.42x = 2,270,480.16
  5. Step 5: Solve for x
    x = 2,270,480.16/2,370.42
  6. Step 6: Final answer
    x = 957.84

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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.