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Finding the Fourth Proportional to 6,762.48, 10,136.54 and 3,990.46

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Solution

The fourth proportional to 6,762.48, 10,136.54 and 3,990.46 is: 5,981.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,762.48 : 10,136.54 = 3,990.46 : x
  2. Step 2: Convert to fraction form
    6,762.48/10,136.54 = 3,990.46/x
  3. Step 3: Cross multiply
    6,762.48x = 10,136.54 × 3,990.46
  4. Step 4: Simplify right side
    6,762.48x = 40,449,457.41
  5. Step 5: Solve for x
    x = 40,449,457.41/6,762.48
  6. Step 6: Final answer
    x = 5,981.45

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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.