Home / 5,787.12-7,988.31-3,798.12

Finding the Fourth Proportional to 5,787.12, 7,988.31 and 3,798.12

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Solution

The fourth proportional to 5,787.12, 7,988.31 and 3,798.12 is: 5,242.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,787.12 : 7,988.31 = 3,798.12 : x
  2. Step 2: Convert to fraction form
    5,787.12/7,988.31 = 3,798.12/x
  3. Step 3: Cross multiply
    5,787.12x = 7,988.31 × 3,798.12
  4. Step 4: Simplify right side
    5,787.12x = 30,340,559.98
  5. Step 5: Solve for x
    x = 30,340,559.98/5,787.12
  6. Step 6: Final answer
    x = 5,242.77

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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.