Home / 5,155.80-7,114.88-2,917.60

Finding the Fourth Proportional to 5,155.80, 7,114.88 and 2,917.60

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Solution

The fourth proportional to 5,155.80, 7,114.88 and 2,917.60 is: 4,026.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,155.80 : 7,114.88 = 2,917.60 : x
  2. Step 2: Convert to fraction form
    5,155.80/7,114.88 = 2,917.60/x
  3. Step 3: Cross multiply
    5,155.80x = 7,114.88 × 2,917.60
  4. Step 4: Simplify right side
    5,155.80x = 20,758,373.89
  5. Step 5: Solve for x
    x = 20,758,373.89/5,155.80
  6. Step 6: Final answer
    x = 4,026.22

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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.