Home / 5,181.12-7,770.24-1,718.40

Finding the Fourth Proportional to 5,181.12, 7,770.24 and 1,718.40

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Solution

The fourth proportional to 5,181.12, 7,770.24 and 1,718.40 is: 2,577.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,181.12 : 7,770.24 = 1,718.40 : x
  2. Step 2: Convert to fraction form
    5,181.12/7,770.24 = 1,718.40/x
  3. Step 3: Cross multiply
    5,181.12x = 7,770.24 × 1,718.40
  4. Step 4: Simplify right side
    5,181.12x = 13,352,380.42
  5. Step 5: Solve for x
    x = 13,352,380.42/5,181.12
  6. Step 6: Final answer
    x = 2,577.12

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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.