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Finding the Fourth Proportional to 9,317.64, 12,859.77 and 7,168.91

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Solution

The fourth proportional to 9,317.64, 12,859.77 and 7,168.91 is: 9,894.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,317.64 : 12,859.77 = 7,168.91 : x
  2. Step 2: Convert to fraction form
    9,317.64/12,859.77 = 7,168.91/x
  3. Step 3: Cross multiply
    9,317.64x = 12,859.77 × 7,168.91
  4. Step 4: Simplify right side
    9,317.64x = 92,190,533.75
  5. Step 5: Solve for x
    x = 92,190,533.75/9,317.64
  6. Step 6: Final answer
    x = 9,894.19

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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.