Home / 8,988.31-12,403.83-5,213.66

Finding the Fourth Proportional to 8,988.31, 12,403.83 and 5,213.66

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Solution

The fourth proportional to 8,988.31, 12,403.83 and 5,213.66 is: 7,194.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,988.31 : 12,403.83 = 5,213.66 : x
  2. Step 2: Convert to fraction form
    8,988.31/12,403.83 = 5,213.66/x
  3. Step 3: Cross multiply
    8,988.31x = 12,403.83 × 5,213.66
  4. Step 4: Simplify right side
    8,988.31x = 64,669,352.32
  5. Step 5: Solve for x
    x = 64,669,352.32/8,988.31
  6. Step 6: Final answer
    x = 7,194.83

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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.