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Finding the Fourth Proportional to 4,971.00, 7,451.85 and 1,681.80

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Solution

The fourth proportional to 4,971.00, 7,451.85 and 1,681.80 is: 2,521.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,971.00 : 7,451.85 = 1,681.80 : x
  2. Step 2: Convert to fraction form
    4,971.00/7,451.85 = 1,681.80/x
  3. Step 3: Cross multiply
    4,971.00x = 7,451.85 × 1,681.80
  4. Step 4: Simplify right side
    4,971.00x = 12,532,490.23
  5. Step 5: Solve for x
    x = 12,532,490.23/4,971.00
  6. Step 6: Final answer
    x = 2,521.12

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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.