Home / 3,643.20-5,464.88-1,178.28

Finding the Fourth Proportional to 3,643.20, 5,464.88 and 1,178.28

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Solution

The fourth proportional to 3,643.20, 5,464.88 and 1,178.28 is: 1,767.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,643.20 : 5,464.88 = 1,178.28 : x
  2. Step 2: Convert to fraction form
    3,643.20/5,464.88 = 1,178.28/x
  3. Step 3: Cross multiply
    3,643.20x = 5,464.88 × 1,178.28
  4. Step 4: Simplify right side
    3,643.20x = 6,439,158.81
  5. Step 5: Solve for x
    x = 6,439,158.81/3,643.20
  6. Step 6: Final answer
    x = 1,767.45

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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.