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Finding the Fourth Proportional to 9,130.94, 12,600.68 and 4,939.20

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Solution

The fourth proportional to 9,130.94, 12,600.68 and 4,939.20 is: 6,816.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,130.94 : 12,600.68 = 4,939.20 : x
  2. Step 2: Convert to fraction form
    9,130.94/12,600.68 = 4,939.20/x
  3. Step 3: Cross multiply
    9,130.94x = 12,600.68 × 4,939.20
  4. Step 4: Simplify right side
    9,130.94x = 62,237,278.66
  5. Step 5: Solve for x
    x = 62,237,278.66/9,130.94
  6. Step 6: Final answer
    x = 6,816.09

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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.