Home / 8,919.48-12,304.80-5,776.68

Finding the Fourth Proportional to 8,919.48, 12,304.80 and 5,776.68

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Solution

The fourth proportional to 8,919.48, 12,304.80 and 5,776.68 is: 7,969.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,919.48 : 12,304.80 = 5,776.68 : x
  2. Step 2: Convert to fraction form
    8,919.48/12,304.80 = 5,776.68/x
  3. Step 3: Cross multiply
    8,919.48x = 12,304.80 × 5,776.68
  4. Step 4: Simplify right side
    8,919.48x = 71,080,892.06
  5. Step 5: Solve for x
    x = 71,080,892.06/8,919.48
  6. Step 6: Final answer
    x = 7,969.17

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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.