Home / 8,988.23-12,403.80-5,213.63

Finding the Fourth Proportional to 8,988.23, 12,403.80 and 5,213.63

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Solution

The fourth proportional to 8,988.23, 12,403.80 and 5,213.63 is: 7,194.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,988.23 : 12,403.80 = 5,213.63 : x
  2. Step 2: Convert to fraction form
    8,988.23/12,403.80 = 5,213.63/x
  3. Step 3: Cross multiply
    8,988.23x = 12,403.80 × 5,213.63
  4. Step 4: Simplify right side
    8,988.23x = 64,668,761.78
  5. Step 5: Solve for x
    x = 64,668,761.78/8,988.23
  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.