Home / 3,140.16-4,710.12-1,290.76

Finding the Fourth Proportional to 3,140.16, 4,710.12 and 1,290.76

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Solution

The fourth proportional to 3,140.16, 4,710.12 and 1,290.76 is: 1,936.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,140.16 : 4,710.12 = 1,290.76 : x
  2. Step 2: Convert to fraction form
    3,140.16/4,710.12 = 1,290.76/x
  3. Step 3: Cross multiply
    3,140.16x = 4,710.12 × 1,290.76
  4. Step 4: Simplify right side
    3,140.16x = 6,079,634.49
  5. Step 5: Solve for x
    x = 6,079,634.49/3,140.16
  6. Step 6: Final answer
    x = 1,936.09

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1.5x scale

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.