Home / 7,378.12-10,181.40-4,191.34

Finding the Fourth Proportional to 7,378.12, 10,181.40 and 4,191.34

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Solution

The fourth proportional to 7,378.12, 10,181.40 and 4,191.34 is: 5,783.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,378.12 : 10,181.40 = 4,191.34 : x
  2. Step 2: Convert to fraction form
    7,378.12/10,181.40 = 4,191.34/x
  3. Step 3: Cross multiply
    7,378.12x = 10,181.40 × 4,191.34
  4. Step 4: Simplify right side
    7,378.12x = 42,673,709.08
  5. Step 5: Solve for x
    x = 42,673,709.08/7,378.12
  6. Step 6: Final answer
    x = 5,783.82

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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.