Home / 3,603.12-4,972.08-2,187.12

Finding the Fourth Proportional to 3,603.12, 4,972.08 and 2,187.12

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Solution

The fourth proportional to 3,603.12, 4,972.08 and 2,187.12 is: 3,018.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,603.12 : 4,972.08 = 2,187.12 : x
  2. Step 2: Convert to fraction form
    3,603.12/4,972.08 = 2,187.12/x
  3. Step 3: Cross multiply
    3,603.12x = 4,972.08 × 2,187.12
  4. Step 4: Simplify right side
    3,603.12x = 10,874,535.61
  5. Step 5: Solve for x
    x = 10,874,535.61/3,603.12
  6. Step 6: Final answer
    x = 3,018.09

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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.