Home / 8,131.95-12,116.70-7,773.75

Finding the Fourth Proportional to 8,131.95, 12,116.70 and 7,773.75

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Solution

The fourth proportional to 8,131.95, 12,116.70 and 7,773.75 is: 11,582.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,131.95 : 12,116.70 = 7,773.75 : x
  2. Step 2: Convert to fraction form
    8,131.95/12,116.70 = 7,773.75/x
  3. Step 3: Cross multiply
    8,131.95x = 12,116.70 × 7,773.75
  4. Step 4: Simplify right side
    8,131.95x = 94,192,196.63
  5. Step 5: Solve for x
    x = 94,192,196.63/8,131.95
  6. Step 6: Final answer
    x = 11,582.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.