Home / 9,507.22-13,120-5,315.46

Finding the Fourth Proportional to 9,507.22, 13,120 and 5,315.46

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Solution

The fourth proportional to 9,507.22, 13,120 and 5,315.46 is: 7,335.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,507.22 : 13,120 = 5,315.46 : x
  2. Step 2: Convert to fraction form
    9,507.22/13,120 = 5,315.46/x
  3. Step 3: Cross multiply
    9,507.22x = 13,120 × 5,315.46
  4. Step 4: Simplify right side
    9,507.22x = 69,738,835.20
  5. Step 5: Solve for x
    x = 69,738,835.20/9,507.22
  6. Step 6: Final answer
    x = 7,335.36

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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.