Home / 8,378.91-12,569.81-2,755.08

Finding the Fourth Proportional to 8,378.91, 12,569.81 and 2,755.08

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Solution

The fourth proportional to 8,378.91, 12,569.81 and 2,755.08 is: 4,133.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,378.91 : 12,569.81 = 2,755.08 : x
  2. Step 2: Convert to fraction form
    8,378.91/12,569.81 = 2,755.08/x
  3. Step 3: Cross multiply
    8,378.91x = 12,569.81 × 2,755.08
  4. Step 4: Simplify right side
    8,378.91x = 34,630,818.36
  5. Step 5: Solve for x
    x = 34,630,818.36/8,378.91
  6. Step 6: Final answer
    x = 4,133.09

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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.