Home / 1,624.14-2,241.32-878.10

Finding the Fourth Proportional to 1,624.14, 2,241.32 and 878.10

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Solution

The fourth proportional to 1,624.14, 2,241.32 and 878.10 is: 1,211.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,624.14 : 2,241.32 = 878.10 : x
  2. Step 2: Convert to fraction form
    1,624.14/2,241.32 = 878.10/x
  3. Step 3: Cross multiply
    1,624.14x = 2,241.32 × 878.10
  4. Step 4: Simplify right side
    1,624.14x = 1,968,101.99
  5. Step 5: Solve for x
    x = 1,968,101.99/1,624.14
  6. Step 6: Final answer
    x = 1,211.78

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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.