Home / 9,122.84-12,589.49-5,143.92

Finding the Fourth Proportional to 9,122.84, 12,589.49 and 5,143.92

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Solution

The fourth proportional to 9,122.84, 12,589.49 and 5,143.92 is: 7,098.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,122.84 : 12,589.49 = 5,143.92 : x
  2. Step 2: Convert to fraction form
    9,122.84/12,589.49 = 5,143.92/x
  3. Step 3: Cross multiply
    9,122.84x = 12,589.49 × 5,143.92
  4. Step 4: Simplify right side
    9,122.84x = 64,759,303.68
  5. Step 5: Solve for x
    x = 64,759,303.68/9,122.84
  6. Step 6: Final answer
    x = 7,098.59

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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.