Home / 8,826.72-12,179.85-5,240.40

Finding the Fourth Proportional to 8,826.72, 12,179.85 and 5,240.40

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Solution

The fourth proportional to 8,826.72, 12,179.85 and 5,240.40 is: 7,231.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,826.72 : 12,179.85 = 5,240.40 : x
  2. Step 2: Convert to fraction form
    8,826.72/12,179.85 = 5,240.40/x
  3. Step 3: Cross multiply
    8,826.72x = 12,179.85 × 5,240.40
  4. Step 4: Simplify right side
    8,826.72x = 63,827,285.94
  5. Step 5: Solve for x
    x = 63,827,285.94/8,826.72
  6. Step 6: Final answer
    x = 7,231.14

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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.