Home / 8,357.50-12,531.39-2,807.79

Finding the Fourth Proportional to 8,357.50, 12,531.39 and 2,807.79

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Solution

The fourth proportional to 8,357.50, 12,531.39 and 2,807.79 is: 4,210.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,357.50 : 12,531.39 = 2,807.79 : x
  2. Step 2: Convert to fraction form
    8,357.50/12,531.39 = 2,807.79/x
  3. Step 3: Cross multiply
    8,357.50x = 12,531.39 × 2,807.79
  4. Step 4: Simplify right side
    8,357.50x = 35,185,511.53
  5. Step 5: Solve for x
    x = 35,185,511.53/8,357.50
  6. Step 6: Final answer
    x = 4,210.05

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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.