Home / 2,103.71-2,903.08-1,318.19

Finding the Fourth Proportional to 2,103.71, 2,903.08 and 1,318.19

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Solution

The fourth proportional to 2,103.71, 2,903.08 and 1,318.19 is: 1,819.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,103.71 : 2,903.08 = 1,318.19 : x
  2. Step 2: Convert to fraction form
    2,103.71/2,903.08 = 1,318.19/x
  3. Step 3: Cross multiply
    2,103.71x = 2,903.08 × 1,318.19
  4. Step 4: Simplify right side
    2,103.71x = 3,826,811.03
  5. Step 5: Solve for x
    x = 3,826,811.03/2,103.71
  6. Step 6: Final answer
    x = 1,819.08

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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.