Home / 5,191.77-7,787.67-1,904.85

Finding the Fourth Proportional to 5,191.77, 7,787.67 and 1,904.85

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Solution

The fourth proportional to 5,191.77, 7,787.67 and 1,904.85 is: 2,857.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,191.77 : 7,787.67 = 1,904.85 : x
  2. Step 2: Convert to fraction form
    5,191.77/7,787.67 = 1,904.85/x
  3. Step 3: Cross multiply
    5,191.77x = 7,787.67 × 1,904.85
  4. Step 4: Simplify right side
    5,191.77x = 14,834,343.20
  5. Step 5: Solve for x
    x = 14,834,343.20/5,191.77
  6. Step 6: Final answer
    x = 2,857.28

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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.