Home / 1,410.10-2,115.21-436.21

Finding the Fourth Proportional to 1,410.10, 2,115.21 and 436.21

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Solution

The fourth proportional to 1,410.10, 2,115.21 and 436.21 is: 654.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,410.10 : 2,115.21 = 436.21 : x
  2. Step 2: Convert to fraction form
    1,410.10/2,115.21 = 436.21/x
  3. Step 3: Cross multiply
    1,410.10x = 2,115.21 × 436.21
  4. Step 4: Simplify right side
    1,410.10x = 922,675.75
  5. Step 5: Solve for x
    x = 922,675.75/1,410.10
  6. Step 6: Final answer
    x = 654.33

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Double scale
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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.