Home / 8,680.64-12,995.36-5,383.12

Finding the Fourth Proportional to 8,680.64, 12,995.36 and 5,383.12

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Solution

The fourth proportional to 8,680.64, 12,995.36 and 5,383.12 is: 8,058.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,680.64 : 12,995.36 = 5,383.12 : x
  2. Step 2: Convert to fraction form
    8,680.64/12,995.36 = 5,383.12/x
  3. Step 3: Cross multiply
    8,680.64x = 12,995.36 × 5,383.12
  4. Step 4: Simplify right side
    8,680.64x = 69,955,582.32
  5. Step 5: Solve for x
    x = 69,955,582.32/8,680.64
  6. Step 6: Final answer
    x = 8,058.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.