Home / 7,983.85-11,961.18-5,787.13

Finding the Fourth Proportional to 7,983.85, 11,961.18 and 5,787.13

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Solution

The fourth proportional to 7,983.85, 11,961.18 and 5,787.13 is: 8,670.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,983.85 : 11,961.18 = 5,787.13 : x
  2. Step 2: Convert to fraction form
    7,983.85/11,961.18 = 5,787.13/x
  3. Step 3: Cross multiply
    7,983.85x = 11,961.18 × 5,787.13
  4. Step 4: Simplify right side
    7,983.85x = 69,220,903.61
  5. Step 5: Solve for x
    x = 69,220,903.61/7,983.85
  6. Step 6: Final answer
    x = 8,670.12

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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.