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Finding the Fourth Proportional to 9,810.70, 14,721.90 and 3,571.21

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Solution

The fourth proportional to 9,810.70, 14,721.90 and 3,571.21 is: 5,358.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,810.70 : 14,721.90 = 3,571.21 : x
  2. Step 2: Convert to fraction form
    9,810.70/14,721.90 = 3,571.21/x
  3. Step 3: Cross multiply
    9,810.70x = 14,721.90 × 3,571.21
  4. Step 4: Simplify right side
    9,810.70x = 52,574,996.50
  5. Step 5: Solve for x
    x = 52,574,996.50/9,810.70
  6. Step 6: Final answer
    x = 5,358.94

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1.5x scale

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.