Home / 4,760.81-7,136.31-1,989.10

Finding the Fourth Proportional to 4,760.81, 7,136.31 and 1,989.10

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Solution

The fourth proportional to 4,760.81, 7,136.31 and 1,989.10 is: 2,981.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,760.81 : 7,136.31 = 1,989.10 : x
  2. Step 2: Convert to fraction form
    4,760.81/7,136.31 = 1,989.10/x
  3. Step 3: Cross multiply
    4,760.81x = 7,136.31 × 1,989.10
  4. Step 4: Simplify right side
    4,760.81x = 14,194,834.22
  5. Step 5: Solve for x
    x = 14,194,834.22/4,760.81
  6. Step 6: Final answer
    x = 2,981.60

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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.