Home / 3,038.40-4,193.46-1,780.20

Finding the Fourth Proportional to 3,038.40, 4,193.46 and 1,780.20

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Solution

The fourth proportional to 3,038.40, 4,193.46 and 1,780.20 is: 2,456.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,038.40 : 4,193.46 = 1,780.20 : x
  2. Step 2: Convert to fraction form
    3,038.40/4,193.46 = 1,780.20/x
  3. Step 3: Cross multiply
    3,038.40x = 4,193.46 × 1,780.20
  4. Step 4: Simplify right side
    3,038.40x = 7,465,197.49
  5. Step 5: Solve for x
    x = 7,465,197.49/3,038.40
  6. Step 6: Final answer
    x = 2,456.95

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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.