Home / 8,178.08-11,285.80-4,641.35

Finding the Fourth Proportional to 8,178.08, 11,285.80 and 4,641.35

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Solution

The fourth proportional to 8,178.08, 11,285.80 and 4,641.35 is: 6,405.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,178.08 : 11,285.80 = 4,641.35 : x
  2. Step 2: Convert to fraction form
    8,178.08/11,285.80 = 4,641.35/x
  3. Step 3: Cross multiply
    8,178.08x = 11,285.80 × 4,641.35
  4. Step 4: Simplify right side
    8,178.08x = 52,381,279.80
  5. Step 5: Solve for x
    x = 52,381,279.80/8,178.08
  6. Step 6: Final answer
    x = 6,405.09

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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.