Home / 1,421.39-2,131.69-599.18

Finding the Fourth Proportional to 1,421.39, 2,131.69 and 599.18

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Solution

The fourth proportional to 1,421.39, 2,131.69 and 599.18 is: 898.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,421.39 : 2,131.69 = 599.18 : x
  2. Step 2: Convert to fraction form
    1,421.39/2,131.69 = 599.18/x
  3. Step 3: Cross multiply
    1,421.39x = 2,131.69 × 599.18
  4. Step 4: Simplify right side
    1,421.39x = 1,277,266.01
  5. Step 5: Solve for x
    x = 1,277,266.01/1,421.39
  6. Step 6: Final answer
    x = 898.60

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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.