Home / 3,117.87-4,303.19-2,977.74

Finding the Fourth Proportional to 3,117.87, 4,303.19 and 2,977.74

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Solution

The fourth proportional to 3,117.87, 4,303.19 and 2,977.74 is: 4,109.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,117.87 : 4,303.19 = 2,977.74 : x
  2. Step 2: Convert to fraction form
    3,117.87/4,303.19 = 2,977.74/x
  3. Step 3: Cross multiply
    3,117.87x = 4,303.19 × 2,977.74
  4. Step 4: Simplify right side
    3,117.87x = 12,813,780.99
  5. Step 5: Solve for x
    x = 12,813,780.99/3,117.87
  6. Step 6: Final answer
    x = 4,109.79

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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.