Home / 3,126.97-4,690.45-1,347.30

Finding the Fourth Proportional to 3,126.97, 4,690.45 and 1,347.30

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Solution

The fourth proportional to 3,126.97, 4,690.45 and 1,347.30 is: 2,020.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,126.97 : 4,690.45 = 1,347.30 : x
  2. Step 2: Convert to fraction form
    3,126.97/4,690.45 = 1,347.30/x
  3. Step 3: Cross multiply
    3,126.97x = 4,690.45 × 1,347.30
  4. Step 4: Simplify right side
    3,126.97x = 6,319,444.97
  5. Step 5: Solve for x
    x = 6,319,444.97/3,126.97
  6. Step 6: Final answer
    x = 2,020.95

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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.