Home / 9,122.78-12,589.45-4,931.03

Finding the Fourth Proportional to 9,122.78, 12,589.45 and 4,931.03

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Solution

The fourth proportional to 9,122.78, 12,589.45 and 4,931.03 is: 6,804.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,122.78 : 12,589.45 = 4,931.03 : x
  2. Step 2: Convert to fraction form
    9,122.78/12,589.45 = 4,931.03/x
  3. Step 3: Cross multiply
    9,122.78x = 12,589.45 × 4,931.03
  4. Step 4: Simplify right side
    9,122.78x = 62,078,917.83
  5. Step 5: Solve for x
    x = 62,078,917.83/9,122.78
  6. Step 6: Final answer
    x = 6,804.83

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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.