Home / 3,154.80-4,357.05-2,455.05

Finding the Fourth Proportional to 3,154.80, 4,357.05 and 2,455.05

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Solution

The fourth proportional to 3,154.80, 4,357.05 and 2,455.05 is: 3,390.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,154.80 : 4,357.05 = 2,455.05 : x
  2. Step 2: Convert to fraction form
    3,154.80/4,357.05 = 2,455.05/x
  3. Step 3: Cross multiply
    3,154.80x = 4,357.05 × 2,455.05
  4. Step 4: Simplify right side
    3,154.80x = 10,696,775.60
  5. Step 5: Solve for x
    x = 10,696,775.60/3,154.80
  6. Step 6: Final answer
    x = 3,390.64

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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.