Home / 9,364.08-12,921.12-5,172.60

Finding the Fourth Proportional to 9,364.08, 12,921.12 and 5,172.60

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Solution

The fourth proportional to 9,364.08, 12,921.12 and 5,172.60 is: 7,137.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,364.08 : 12,921.12 = 5,172.60 : x
  2. Step 2: Convert to fraction form
    9,364.08/12,921.12 = 5,172.60/x
  3. Step 3: Cross multiply
    9,364.08x = 12,921.12 × 5,172.60
  4. Step 4: Simplify right side
    9,364.08x = 66,835,785.31
  5. Step 5: Solve for x
    x = 66,835,785.31/9,364.08
  6. Step 6: Final answer
    x = 7,137.46

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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.