Home / 3,555.28-5,340.66-3,438.64

Finding the Fourth Proportional to 3,555.28, 5,340.66 and 3,438.64

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Solution

The fourth proportional to 3,555.28, 5,340.66 and 3,438.64 is: 5,165.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,555.28 : 5,340.66 = 3,438.64 : x
  2. Step 2: Convert to fraction form
    3,555.28/5,340.66 = 3,438.64/x
  3. Step 3: Cross multiply
    3,555.28x = 5,340.66 × 3,438.64
  4. Step 4: Simplify right side
    3,555.28x = 18,364,607.10
  5. Step 5: Solve for x
    x = 18,364,607.10/3,555.28
  6. Step 6: Final answer
    x = 5,165.45

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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.