Home / 8,136.51-12,205.86-2,870.28

Finding the Fourth Proportional to 8,136.51, 12,205.86 and 2,870.28

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Solution

The fourth proportional to 8,136.51, 12,205.86 and 2,870.28 is: 4,305.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,136.51 : 12,205.86 = 2,870.28 : x
  2. Step 2: Convert to fraction form
    8,136.51/12,205.86 = 2,870.28/x
  3. Step 3: Cross multiply
    8,136.51x = 12,205.86 × 2,870.28
  4. Step 4: Simplify right side
    8,136.51x = 35,034,235.84
  5. Step 5: Solve for x
    x = 35,034,235.84/8,136.51
  6. Step 6: Final answer
    x = 4,305.81

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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.