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Finding the Fourth Proportional to 9,322.63, 12,865.43 and 5,130.88

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Solution

The fourth proportional to 9,322.63, 12,865.43 and 5,130.88 is: 7,080.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,322.63 : 12,865.43 = 5,130.88 : x
  2. Step 2: Convert to fraction form
    9,322.63/12,865.43 = 5,130.88/x
  3. Step 3: Cross multiply
    9,322.63x = 12,865.43 × 5,130.88
  4. Step 4: Simplify right side
    9,322.63x = 66,010,887.50
  5. Step 5: Solve for x
    x = 66,010,887.50/9,322.63
  6. Step 6: Final answer
    x = 7,080.72

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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.