Home / 5,155.18-7,735.62-2,815.10

Finding the Fourth Proportional to 5,155.18, 7,735.62 and 2,815.10

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Solution

The fourth proportional to 5,155.18, 7,735.62 and 2,815.10 is: 4,224.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,155.18 : 7,735.62 = 2,815.10 : x
  2. Step 2: Convert to fraction form
    5,155.18/7,735.62 = 2,815.10/x
  3. Step 3: Cross multiply
    5,155.18x = 7,735.62 × 2,815.10
  4. Step 4: Simplify right side
    5,155.18x = 21,776,543.86
  5. Step 5: Solve for x
    x = 21,776,543.86/5,155.18
  6. Step 6: Final answer
    x = 4,224.21

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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.