Home / 1,440.95-2,161.30-400.93

Finding the Fourth Proportional to 1,440.95, 2,161.30 and 400.93

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Solution

The fourth proportional to 1,440.95, 2,161.30 and 400.93 is: 601.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,440.95 : 2,161.30 = 400.93 : x
  2. Step 2: Convert to fraction form
    1,440.95/2,161.30 = 400.93/x
  3. Step 3: Cross multiply
    1,440.95x = 2,161.30 × 400.93
  4. Step 4: Simplify right side
    1,440.95x = 866,530.06
  5. Step 5: Solve for x
    x = 866,530.06/1,440.95
  6. Step 6: Final answer
    x = 601.36

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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.