Home / 8,914.34-12,303.09-5,136.78

Finding the Fourth Proportional to 8,914.34, 12,303.09 and 5,136.78

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Solution

The fourth proportional to 8,914.34, 12,303.09 and 5,136.78 is: 7,089.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,914.34 : 12,303.09 = 5,136.78 : x
  2. Step 2: Convert to fraction form
    8,914.34/12,303.09 = 5,136.78/x
  3. Step 3: Cross multiply
    8,914.34x = 12,303.09 × 5,136.78
  4. Step 4: Simplify right side
    8,914.34x = 63,198,266.65
  5. Step 5: Solve for x
    x = 63,198,266.65/8,914.34
  6. Step 6: Final answer
    x = 7,089.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.