Home / 8,187.24-12,281.78-2,639.32

Finding the Fourth Proportional to 8,187.24, 12,281.78 and 2,639.32

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Solution

The fourth proportional to 8,187.24, 12,281.78 and 2,639.32 is: 3,959.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,187.24 : 12,281.78 = 2,639.32 : x
  2. Step 2: Convert to fraction form
    8,187.24/12,281.78 = 2,639.32/x
  3. Step 3: Cross multiply
    8,187.24x = 12,281.78 × 2,639.32
  4. Step 4: Simplify right side
    8,187.24x = 32,415,547.59
  5. Step 5: Solve for x
    x = 32,415,547.59/8,187.24
  6. Step 6: Final answer
    x = 3,959.28

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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.