Home / 2,104.40-2,903.92-1,220.08

Finding the Fourth Proportional to 2,104.40, 2,903.92 and 1,220.08

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Solution

The fourth proportional to 2,104.40, 2,903.92 and 1,220.08 is: 1,683.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,104.40 : 2,903.92 = 1,220.08 : x
  2. Step 2: Convert to fraction form
    2,104.40/2,903.92 = 1,220.08/x
  3. Step 3: Cross multiply
    2,104.40x = 2,903.92 × 1,220.08
  4. Step 4: Simplify right side
    2,104.40x = 3,543,014.71
  5. Step 5: Solve for x
    x = 3,543,014.71/2,104.40
  6. Step 6: Final answer
    x = 1,683.62

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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.