Home / 5,219.76-7,825.50-2,585.40

Finding the Fourth Proportional to 5,219.76, 7,825.50 and 2,585.40

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Solution

The fourth proportional to 5,219.76, 7,825.50 and 2,585.40 is: 3,876.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,219.76 : 7,825.50 = 2,585.40 : x
  2. Step 2: Convert to fraction form
    5,219.76/7,825.50 = 2,585.40/x
  3. Step 3: Cross multiply
    5,219.76x = 7,825.50 × 2,585.40
  4. Step 4: Simplify right side
    5,219.76x = 20,232,047.70
  5. Step 5: Solve for x
    x = 20,232,047.70/5,219.76
  6. Step 6: Final answer
    x = 3,876.05

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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.