Home / 3,155.14-4,708.40-2,771.20

Finding the Fourth Proportional to 3,155.14, 4,708.40 and 2,771.20

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Solution

The fourth proportional to 3,155.14, 4,708.40 and 2,771.20 is: 4,135.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,155.14 : 4,708.40 = 2,771.20 : x
  2. Step 2: Convert to fraction form
    3,155.14/4,708.40 = 2,771.20/x
  3. Step 3: Cross multiply
    3,155.14x = 4,708.40 × 2,771.20
  4. Step 4: Simplify right side
    3,155.14x = 13,047,918.08
  5. Step 5: Solve for x
    x = 13,047,918.08/3,155.14
  6. Step 6: Final answer
    x = 4,135.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.