Home / 9,291.23-12,822.79-5,311.58

Finding the Fourth Proportional to 9,291.23, 12,822.79 and 5,311.58

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Solution

The fourth proportional to 9,291.23, 12,822.79 and 5,311.58 is: 7,330.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,291.23 : 12,822.79 = 5,311.58 : x
  2. Step 2: Convert to fraction form
    9,291.23/12,822.79 = 5,311.58/x
  3. Step 3: Cross multiply
    9,291.23x = 12,822.79 × 5,311.58
  4. Step 4: Simplify right side
    9,291.23x = 68,109,274.91
  5. Step 5: Solve for x
    x = 68,109,274.91/9,291.23
  6. Step 6: Final answer
    x = 7,330.49

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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.