Home / 8,690.67-13,003.70-5,182.58

Finding the Fourth Proportional to 8,690.67, 13,003.70 and 5,182.58

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Solution

The fourth proportional to 8,690.67, 13,003.70 and 5,182.58 is: 7,754.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,690.67 : 13,003.70 = 5,182.58 : x
  2. Step 2: Convert to fraction form
    8,690.67/13,003.70 = 5,182.58/x
  3. Step 3: Cross multiply
    8,690.67x = 13,003.70 × 5,182.58
  4. Step 4: Simplify right side
    8,690.67x = 67,392,715.55
  5. Step 5: Solve for x
    x = 67,392,715.55/8,690.67
  6. Step 6: Final answer
    x = 7,754.61

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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.