Home / 5,618.65-8,425.35-1,668.45

Finding the Fourth Proportional to 5,618.65, 8,425.35 and 1,668.45

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Solution

The fourth proportional to 5,618.65, 8,425.35 and 1,668.45 is: 2,501.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,618.65 : 8,425.35 = 1,668.45 : x
  2. Step 2: Convert to fraction form
    5,618.65/8,425.35 = 1,668.45/x
  3. Step 3: Cross multiply
    5,618.65x = 8,425.35 × 1,668.45
  4. Step 4: Simplify right side
    5,618.65x = 14,057,306.80
  5. Step 5: Solve for x
    x = 14,057,306.80/5,618.65
  6. Step 6: Final answer
    x = 2,501.90

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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.