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Finding the Fourth Proportional to 4,698, 7,047 and 1,620

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Solution

The fourth proportional to 4,698, 7,047 and 1,620 is: 2,430

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,698 : 7,047 = 1,620 : x
  2. Step 2: Convert to fraction form
    4,698/7,047 = 1,620/x
  3. Step 3: Cross multiply
    4,698x = 7,047 × 1,620
  4. Step 4: Simplify right side
    4,698x = 11,416,140
  5. Step 5: Solve for x
    x = 11,416,140/4,698
  6. Step 6: Final answer
    x = 2,430

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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.