Home / 8,979.53-12,395.57-5,621.58

Finding the Fourth Proportional to 8,979.53, 12,395.57 and 5,621.58

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Solution

The fourth proportional to 8,979.53, 12,395.57 and 5,621.58 is: 7,760.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,979.53 : 12,395.57 = 5,621.58 : x
  2. Step 2: Convert to fraction form
    8,979.53/12,395.57 = 5,621.58/x
  3. Step 3: Cross multiply
    8,979.53x = 12,395.57 × 5,621.58
  4. Step 4: Simplify right side
    8,979.53x = 69,682,660.29
  5. Step 5: Solve for x
    x = 69,682,660.29/8,979.53
  6. Step 6: Final answer
    x = 7,760.17

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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.