Home / 1,429.10-2,143.87-607.38

Finding the Fourth Proportional to 1,429.10, 2,143.87 and 607.38

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Solution

The fourth proportional to 1,429.10, 2,143.87 and 607.38 is: 911.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,429.10 : 2,143.87 = 607.38 : x
  2. Step 2: Convert to fraction form
    1,429.10/2,143.87 = 607.38/x
  3. Step 3: Cross multiply
    1,429.10x = 2,143.87 × 607.38
  4. Step 4: Simplify right side
    1,429.10x = 1,302,143.76
  5. Step 5: Solve for x
    x = 1,302,143.76/1,429.10
  6. Step 6: Final answer
    x = 911.16

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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.