Home / 8,459.09-12,688.49-2,912.31

Finding the Fourth Proportional to 8,459.09, 12,688.49 and 2,912.31

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Solution

The fourth proportional to 8,459.09, 12,688.49 and 2,912.31 is: 4,368.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,459.09 : 12,688.49 = 2,912.31 : x
  2. Step 2: Convert to fraction form
    8,459.09/12,688.49 = 2,912.31/x
  3. Step 3: Cross multiply
    8,459.09x = 12,688.49 × 2,912.31
  4. Step 4: Simplify right side
    8,459.09x = 36,952,836.72
  5. Step 5: Solve for x
    x = 36,952,836.72/8,459.09
  6. Step 6: Final answer
    x = 4,368.42

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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.