Home / 9,351.12-12,904.56-5,159.36

Finding the Fourth Proportional to 9,351.12, 12,904.56 and 5,159.36

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Solution

The fourth proportional to 9,351.12, 12,904.56 and 5,159.36 is: 7,119.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,351.12 : 12,904.56 = 5,159.36 : x
  2. Step 2: Convert to fraction form
    9,351.12/12,904.56 = 5,159.36/x
  3. Step 3: Cross multiply
    9,351.12x = 12,904.56 × 5,159.36
  4. Step 4: Simplify right side
    9,351.12x = 66,579,270.68
  5. Step 5: Solve for x
    x = 66,579,270.68/9,351.12
  6. Step 6: Final answer
    x = 7,119.92

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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.