Home / 1,436.64-2,155.18-512.06

Finding the Fourth Proportional to 1,436.64, 2,155.18 and 512.06

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Solution

The fourth proportional to 1,436.64, 2,155.18 and 512.06 is: 768.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,436.64 : 2,155.18 = 512.06 : x
  2. Step 2: Convert to fraction form
    1,436.64/2,155.18 = 512.06/x
  3. Step 3: Cross multiply
    1,436.64x = 2,155.18 × 512.06
  4. Step 4: Simplify right side
    1,436.64x = 1,103,581.47
  5. Step 5: Solve for x
    x = 1,103,581.47/1,436.64
  6. Step 6: Final answer
    x = 768.17

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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.