Home / 8,320.84-12,477.81-3,387.13

Finding the Fourth Proportional to 8,320.84, 12,477.81 and 3,387.13

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Solution

The fourth proportional to 8,320.84, 12,477.81 and 3,387.13 is: 5,079.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,320.84 : 12,477.81 = 3,387.13 : x
  2. Step 2: Convert to fraction form
    8,320.84/12,477.81 = 3,387.13/x
  3. Step 3: Cross multiply
    8,320.84x = 12,477.81 × 3,387.13
  4. Step 4: Simplify right side
    8,320.84x = 42,263,964.59
  5. Step 5: Solve for x
    x = 42,263,964.59/8,320.84
  6. Step 6: Final answer
    x = 5,079.29

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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.