Home / 8,690.98-13,036.47-3,143.03

Finding the Fourth Proportional to 8,690.98, 13,036.47 and 3,143.03

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Solution

The fourth proportional to 8,690.98, 13,036.47 and 3,143.03 is: 4,714.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,690.98 : 13,036.47 = 3,143.03 : x
  2. Step 2: Convert to fraction form
    8,690.98/13,036.47 = 3,143.03/x
  3. Step 3: Cross multiply
    8,690.98x = 13,036.47 × 3,143.03
  4. Step 4: Simplify right side
    8,690.98x = 40,974,016.30
  5. Step 5: Solve for x
    x = 40,974,016.30/8,690.98
  6. Step 6: Final answer
    x = 4,714.55

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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.