Home / 1,591.34-2,194.80-1,217.39

Finding the Fourth Proportional to 1,591.34, 2,194.80 and 1,217.39

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Solution

The fourth proportional to 1,591.34, 2,194.80 and 1,217.39 is: 1,679.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,591.34 : 2,194.80 = 1,217.39 : x
  2. Step 2: Convert to fraction form
    1,591.34/2,194.80 = 1,217.39/x
  3. Step 3: Cross multiply
    1,591.34x = 2,194.80 × 1,217.39
  4. Step 4: Simplify right side
    1,591.34x = 2,671,916.60
  5. Step 5: Solve for x
    x = 2,671,916.60/1,591.34
  6. Step 6: Final answer
    x = 1,679.04

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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.