Home / 3,140.61-4,710.75-1,291.26

Finding the Fourth Proportional to 3,140.61, 4,710.75 and 1,291.26

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Solution

The fourth proportional to 3,140.61, 4,710.75 and 1,291.26 is: 1,936.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,140.61 : 4,710.75 = 1,291.26 : x
  2. Step 2: Convert to fraction form
    3,140.61/4,710.75 = 1,291.26/x
  3. Step 3: Cross multiply
    3,140.61x = 4,710.75 × 1,291.26
  4. Step 4: Simplify right side
    3,140.61x = 6,082,803.05
  5. Step 5: Solve for x
    x = 6,082,803.05/3,140.61
  6. Step 6: Final answer
    x = 1,936.82

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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.