Home / 1,388.23-2,082.63-464.08

Finding the Fourth Proportional to 1,388.23, 2,082.63 and 464.08

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Solution

The fourth proportional to 1,388.23, 2,082.63 and 464.08 is: 696.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,388.23 : 2,082.63 = 464.08 : x
  2. Step 2: Convert to fraction form
    1,388.23/2,082.63 = 464.08/x
  3. Step 3: Cross multiply
    1,388.23x = 2,082.63 × 464.08
  4. Step 4: Simplify right side
    1,388.23x = 966,506.93
  5. Step 5: Solve for x
    x = 966,506.93/1,388.23
  6. Step 6: Final answer
    x = 696.22

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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.