Home / 9,309.36-12,847.16-5,117.72

Finding the Fourth Proportional to 9,309.36, 12,847.16 and 5,117.72

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Solution

The fourth proportional to 9,309.36, 12,847.16 and 5,117.72 is: 7,062.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,309.36 : 12,847.16 = 5,117.72 : x
  2. Step 2: Convert to fraction form
    9,309.36/12,847.16 = 5,117.72/x
  3. Step 3: Cross multiply
    9,309.36x = 12,847.16 × 5,117.72
  4. Step 4: Simplify right side
    9,309.36x = 65,748,167.68
  5. Step 5: Solve for x
    x = 65,748,167.68/9,309.36
  6. Step 6: Final answer
    x = 7,062.59

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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.