Home / 8,690.16-13,052.70-5,187.02

Finding the Fourth Proportional to 8,690.16, 13,052.70 and 5,187.02

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Solution

The fourth proportional to 8,690.16, 13,052.70 and 5,187.02 is: 7,790.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,690.16 : 13,052.70 = 5,187.02 : x
  2. Step 2: Convert to fraction form
    8,690.16/13,052.70 = 5,187.02/x
  3. Step 3: Cross multiply
    8,690.16x = 13,052.70 × 5,187.02
  4. Step 4: Simplify right side
    8,690.16x = 67,704,550.69
  5. Step 5: Solve for x
    x = 67,704,550.69/8,690.16
  6. Step 6: Final answer
    x = 7,790.94

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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.