Home / 9,172.45-12,656.41-5,394.88

Finding the Fourth Proportional to 9,172.45, 12,656.41 and 5,394.88

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Solution

The fourth proportional to 9,172.45, 12,656.41 and 5,394.88 is: 7,444.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,172.45 : 12,656.41 = 5,394.88 : x
  2. Step 2: Convert to fraction form
    9,172.45/12,656.41 = 5,394.88/x
  3. Step 3: Cross multiply
    9,172.45x = 12,656.41 × 5,394.88
  4. Step 4: Simplify right side
    9,172.45x = 68,279,813.18
  5. Step 5: Solve for x
    x = 68,279,813.18/9,172.45
  6. Step 6: Final answer
    x = 7,444.01

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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.