Home / 9,690.25-13,372.89-5,714.77

Finding the Fourth Proportional to 9,690.25, 13,372.89 and 5,714.77

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Solution

The fourth proportional to 9,690.25, 13,372.89 and 5,714.77 is: 7,886.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,690.25 : 13,372.89 = 5,714.77 : x
  2. Step 2: Convert to fraction form
    9,690.25/13,372.89 = 5,714.77/x
  3. Step 3: Cross multiply
    9,690.25x = 13,372.89 × 5,714.77
  4. Step 4: Simplify right side
    9,690.25x = 76,422,990.59
  5. Step 5: Solve for x
    x = 76,422,990.59/9,690.25
  6. Step 6: Final answer
    x = 7,886.59

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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.