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Finding the Fourth Proportional to 3,642.60, 5,460.30 and 1,448.40

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Solution

The fourth proportional to 3,642.60, 5,460.30 and 1,448.40 is: 2,171.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,642.60 : 5,460.30 = 1,448.40 : x
  2. Step 2: Convert to fraction form
    3,642.60/5,460.30 = 1,448.40/x
  3. Step 3: Cross multiply
    3,642.60x = 5,460.30 × 1,448.40
  4. Step 4: Simplify right side
    3,642.60x = 7,908,698.52
  5. Step 5: Solve for x
    x = 7,908,698.52/3,642.60
  6. Step 6: Final answer
    x = 2,171.17

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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.