Home / 3,140.43-4,710.65-1,291.05

Finding the Fourth Proportional to 3,140.43, 4,710.65 and 1,291.05

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Solution

The fourth proportional to 3,140.43, 4,710.65 and 1,291.05 is: 1,936.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,140.43 : 4,710.65 = 1,291.05 : x
  2. Step 2: Convert to fraction form
    3,140.43/4,710.65 = 1,291.05/x
  3. Step 3: Cross multiply
    3,140.43x = 4,710.65 × 1,291.05
  4. Step 4: Simplify right side
    3,140.43x = 6,081,678.23
  5. Step 5: Solve for x
    x = 6,081,678.23/3,140.43
  6. Step 6: Final answer
    x = 1,936.58

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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.