Home / 1,440.18-2,157.74-1,111.73

Finding the Fourth Proportional to 1,440.18, 2,157.74 and 1,111.73

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Solution

The fourth proportional to 1,440.18, 2,157.74 and 1,111.73 is: 1,665.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,440.18 : 2,157.74 = 1,111.73 : x
  2. Step 2: Convert to fraction form
    1,440.18/2,157.74 = 1,111.73/x
  3. Step 3: Cross multiply
    1,440.18x = 2,157.74 × 1,111.73
  4. Step 4: Simplify right side
    1,440.18x = 2,398,812.11
  5. Step 5: Solve for x
    x = 2,398,812.11/1,440.18
  6. Step 6: Final answer
    x = 1,665.63

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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.