Home / 1,440.23-2,160.19-400.11

Finding the Fourth Proportional to 1,440.23, 2,160.19 and 400.11

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Solution

The fourth proportional to 1,440.23, 2,160.19 and 400.11 is: 600.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,440.23 : 2,160.19 = 400.11 : x
  2. Step 2: Convert to fraction form
    1,440.23/2,160.19 = 400.11/x
  3. Step 3: Cross multiply
    1,440.23x = 2,160.19 × 400.11
  4. Step 4: Simplify right side
    1,440.23x = 864,325.37
  5. Step 5: Solve for x
    x = 864,325.37/1,440.23
  6. Step 6: Final answer
    x = 600.13

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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.