Home / 8,690.52-13,036.86-3,143.16

Finding the Fourth Proportional to 8,690.52, 13,036.86 and 3,143.16

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Solution

The fourth proportional to 8,690.52, 13,036.86 and 3,143.16 is: 4,715.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,690.52 : 13,036.86 = 3,143.16 : x
  2. Step 2: Convert to fraction form
    8,690.52/13,036.86 = 3,143.16/x
  3. Step 3: Cross multiply
    8,690.52x = 13,036.86 × 3,143.16
  4. Step 4: Simplify right side
    8,690.52x = 40,976,936.88
  5. Step 5: Solve for x
    x = 40,976,936.88/8,690.52
  6. Step 6: Final answer
    x = 4,715.13

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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.