Home / 9,122.63-12,589.43-5,587.79

Finding the Fourth Proportional to 9,122.63, 12,589.43 and 5,587.79

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Solution

The fourth proportional to 9,122.63, 12,589.43 and 5,587.79 is: 7,711.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,122.63 : 12,589.43 = 5,587.79 : x
  2. Step 2: Convert to fraction form
    9,122.63/12,589.43 = 5,587.79/x
  3. Step 3: Cross multiply
    9,122.63x = 12,589.43 × 5,587.79
  4. Step 4: Simplify right side
    9,122.63x = 70,347,000.17
  5. Step 5: Solve for x
    x = 70,347,000.17/9,122.63
  6. Step 6: Final answer
    x = 7,711.27

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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.