Home / 8,987.16-12,403.74-6,858.66

Finding the Fourth Proportional to 8,987.16, 12,403.74 and 6,858.66

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Solution

The fourth proportional to 8,987.16, 12,403.74 and 6,858.66 is: 9,466.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,987.16 : 12,403.74 = 6,858.66 : x
  2. Step 2: Convert to fraction form
    8,987.16/12,403.74 = 6,858.66/x
  3. Step 3: Cross multiply
    8,987.16x = 12,403.74 × 6,858.66
  4. Step 4: Simplify right side
    8,987.16x = 85,073,035.39
  5. Step 5: Solve for x
    x = 85,073,035.39/8,987.16
  6. Step 6: Final answer
    x = 9,466.06

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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.