Home / 8,176.79-11,279.18-5,784.08

Finding the Fourth Proportional to 8,176.79, 11,279.18 and 5,784.08

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Solution

The fourth proportional to 8,176.79, 11,279.18 and 5,784.08 is: 7,978.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,176.79 : 11,279.18 = 5,784.08 : x
  2. Step 2: Convert to fraction form
    8,176.79/11,279.18 = 5,784.08/x
  3. Step 3: Cross multiply
    8,176.79x = 11,279.18 × 5,784.08
  4. Step 4: Simplify right side
    8,176.79x = 65,239,650.53
  5. Step 5: Solve for x
    x = 65,239,650.53/8,176.79
  6. Step 6: Final answer
    x = 7,978.64

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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.