Home / 8,123.80-11,210.70-4,586.76

Finding the Fourth Proportional to 8,123.80, 11,210.70 and 4,586.76

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Solution

The fourth proportional to 8,123.80, 11,210.70 and 4,586.76 is: 6,329.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,123.80 : 11,210.70 = 4,586.76 : x
  2. Step 2: Convert to fraction form
    8,123.80/11,210.70 = 4,586.76/x
  3. Step 3: Cross multiply
    8,123.80x = 11,210.70 × 4,586.76
  4. Step 4: Simplify right side
    8,123.80x = 51,420,790.33
  5. Step 5: Solve for x
    x = 51,420,790.33/8,123.80
  6. Step 6: Final answer
    x = 6,329.65

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Half scale
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Double scale
Find fourth proportional to 8,124.80, 11,212.08 and 4,587.76
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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.