Home / 1,440.42-2,160.27-400.15

Finding the Fourth Proportional to 1,440.42, 2,160.27 and 400.15

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Solution

The fourth proportional to 1,440.42, 2,160.27 and 400.15 is: 600.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,440.42 : 2,160.27 = 400.15 : x
  2. Step 2: Convert to fraction form
    1,440.42/2,160.27 = 400.15/x
  3. Step 3: Cross multiply
    1,440.42x = 2,160.27 × 400.15
  4. Step 4: Simplify right side
    1,440.42x = 864,437.78
  5. Step 5: Solve for x
    x = 864,437.78/1,440.42
  6. Step 6: Final answer
    x = 600.13

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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.