Home / 5,191.43-7,788.18-1,904.55

Finding the Fourth Proportional to 5,191.43, 7,788.18 and 1,904.55

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Solution

The fourth proportional to 5,191.43, 7,788.18 and 1,904.55 is: 2,857.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,191.43 : 7,788.18 = 1,904.55 : x
  2. Step 2: Convert to fraction form
    5,191.43/7,788.18 = 1,904.55/x
  3. Step 3: Cross multiply
    5,191.43x = 7,788.18 × 1,904.55
  4. Step 4: Simplify right side
    5,191.43x = 14,833,000.28
  5. Step 5: Solve for x
    x = 14,833,000.28/5,191.43
  6. Step 6: Final answer
    x = 2,857.21

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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.