Home / 8,986.32-12,405.56-6,965.28

Finding the Fourth Proportional to 8,986.32, 12,405.56 and 6,965.28

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Solution

The fourth proportional to 8,986.32, 12,405.56 and 6,965.28 is: 9,615.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,986.32 : 12,405.56 = 6,965.28 : x
  2. Step 2: Convert to fraction form
    8,986.32/12,405.56 = 6,965.28/x
  3. Step 3: Cross multiply
    8,986.32x = 12,405.56 × 6,965.28
  4. Step 4: Simplify right side
    8,986.32x = 86,408,164.13
  5. Step 5: Solve for x
    x = 86,408,164.13/8,986.32
  6. Step 6: Final answer
    x = 9,615.52

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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.