Home / 3,112.29-4,303.08-2,974.59

Finding the Fourth Proportional to 3,112.29, 4,303.08 and 2,974.59

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Solution

The fourth proportional to 3,112.29, 4,303.08 and 2,974.59 is: 4,112.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,112.29 : 4,303.08 = 2,974.59 : x
  2. Step 2: Convert to fraction form
    3,112.29/4,303.08 = 2,974.59/x
  3. Step 3: Cross multiply
    3,112.29x = 4,303.08 × 2,974.59
  4. Step 4: Simplify right side
    3,112.29x = 12,799,898.74
  5. Step 5: Solve for x
    x = 12,799,898.74/3,112.29
  6. Step 6: Final answer
    x = 4,112.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.