Home / 8,680.34-11,979.61-4,904.20

Finding the Fourth Proportional to 8,680.34, 11,979.61 and 4,904.20

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Solution

The fourth proportional to 8,680.34, 11,979.61 and 4,904.20 is: 6,768.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,680.34 : 11,979.61 = 4,904.20 : x
  2. Step 2: Convert to fraction form
    8,680.34/11,979.61 = 4,904.20/x
  3. Step 3: Cross multiply
    8,680.34x = 11,979.61 × 4,904.20
  4. Step 4: Simplify right side
    8,680.34x = 58,750,403.36
  5. Step 5: Solve for x
    x = 58,750,403.36/8,680.34
  6. Step 6: Final answer
    x = 6,768.21

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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.