Home / 8,799.80-12,143.79-4,821.28

Finding the Fourth Proportional to 8,799.80, 12,143.79 and 4,821.28

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Solution

The fourth proportional to 8,799.80, 12,143.79 and 4,821.28 is: 6,653.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,799.80 : 12,143.79 = 4,821.28 : x
  2. Step 2: Convert to fraction form
    8,799.80/12,143.79 = 4,821.28/x
  3. Step 3: Cross multiply
    8,799.80x = 12,143.79 × 4,821.28
  4. Step 4: Simplify right side
    8,799.80x = 58,548,581.49
  5. Step 5: Solve for x
    x = 58,548,581.49/8,799.80
  6. Step 6: Final answer
    x = 6,653.40

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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.