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Finding the Fourth Proportional to 4,668, 7,003.20 and 1,590

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Solution

The fourth proportional to 4,668, 7,003.20 and 1,590 is: 2,385.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,668 : 7,003.20 = 1,590 : x
  2. Step 2: Convert to fraction form
    4,668/7,003.20 = 1,590/x
  3. Step 3: Cross multiply
    4,668x = 7,003.20 × 1,590
  4. Step 4: Simplify right side
    4,668x = 11,135,088
  5. Step 5: Solve for x
    x = 11,135,088/4,668
  6. Step 6: Final answer
    x = 2,385.41

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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.