Home / 8,690.89-11,977.35-6,173.11

Finding the Fourth Proportional to 8,690.89, 11,977.35 and 6,173.11

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Solution

The fourth proportional to 8,690.89, 11,977.35 and 6,173.11 is: 8,507.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,690.89 : 11,977.35 = 6,173.11 : x
  2. Step 2: Convert to fraction form
    8,690.89/11,977.35 = 6,173.11/x
  3. Step 3: Cross multiply
    8,690.89x = 11,977.35 × 6,173.11
  4. Step 4: Simplify right side
    8,690.89x = 73,937,499.06
  5. Step 5: Solve for x
    x = 73,937,499.06/8,690.89
  6. Step 6: Final answer
    x = 8,507.47

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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.