Home / 9,353.12-12,907.08-5,161.28

Finding the Fourth Proportional to 9,353.12, 12,907.08 and 5,161.28

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Solution

The fourth proportional to 9,353.12, 12,907.08 and 5,161.28 is: 7,122.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,353.12 : 12,907.08 = 5,161.28 : x
  2. Step 2: Convert to fraction form
    9,353.12/12,907.08 = 5,161.28/x
  3. Step 3: Cross multiply
    9,353.12x = 12,907.08 × 5,161.28
  4. Step 4: Simplify right side
    9,353.12x = 66,617,053.86
  5. Step 5: Solve for x
    x = 66,617,053.86/9,353.12
  6. Step 6: Final answer
    x = 7,122.44

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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.