Home / 8,913.07-12,300.49-5,136.85

Finding the Fourth Proportional to 8,913.07, 12,300.49 and 5,136.85

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Solution

The fourth proportional to 8,913.07, 12,300.49 and 5,136.85 is: 7,089.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,913.07 : 12,300.49 = 5,136.85 : x
  2. Step 2: Convert to fraction form
    8,913.07/12,300.49 = 5,136.85/x
  3. Step 3: Cross multiply
    8,913.07x = 12,300.49 × 5,136.85
  4. Step 4: Simplify right side
    8,913.07x = 63,185,793.85
  5. Step 5: Solve for x
    x = 63,185,793.85/8,913.07
  6. Step 6: Final answer
    x = 7,089.12

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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.