Home / 1,440.14-2,160.33-400.14

Finding the Fourth Proportional to 1,440.14, 2,160.33 and 400.14

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Solution

The fourth proportional to 1,440.14, 2,160.33 and 400.14 is: 600.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,440.14 : 2,160.33 = 400.14 : x
  2. Step 2: Convert to fraction form
    1,440.14/2,160.33 = 400.14/x
  3. Step 3: Cross multiply
    1,440.14x = 2,160.33 × 400.14
  4. Step 4: Simplify right side
    1,440.14x = 864,434.45
  5. Step 5: Solve for x
    x = 864,434.45/1,440.14
  6. Step 6: Final answer
    x = 600.24

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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.