Home / 3,140.13-4,711.23-1,292.12

Finding the Fourth Proportional to 3,140.13, 4,711.23 and 1,292.12

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Solution

The fourth proportional to 3,140.13, 4,711.23 and 1,292.12 is: 1,938.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,140.13 : 4,711.23 = 1,292.12 : x
  2. Step 2: Convert to fraction form
    3,140.13/4,711.23 = 1,292.12/x
  3. Step 3: Cross multiply
    3,140.13x = 4,711.23 × 1,292.12
  4. Step 4: Simplify right side
    3,140.13x = 6,087,444.49
  5. Step 5: Solve for x
    x = 6,087,444.49/3,140.13
  6. Step 6: Final answer
    x = 1,938.60

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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.