Home / 2,104.07-2,903.63-1,220.40

Finding the Fourth Proportional to 2,104.07, 2,903.63 and 1,220.40

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Solution

The fourth proportional to 2,104.07, 2,903.63 and 1,220.40 is: 1,684.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,104.07 : 2,903.63 = 1,220.40 : x
  2. Step 2: Convert to fraction form
    2,104.07/2,903.63 = 1,220.40/x
  3. Step 3: Cross multiply
    2,104.07x = 2,903.63 × 1,220.40
  4. Step 4: Simplify right side
    2,104.07x = 3,543,569.43
  5. Step 5: Solve for x
    x = 3,543,569.43/2,104.07
  6. Step 6: Final answer
    x = 1,684.15

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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.