Home / 4,187.98-5,780.46-2,420.70

Finding the Fourth Proportional to 4,187.98, 5,780.46 and 2,420.70

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Solution

The fourth proportional to 4,187.98, 5,780.46 and 2,420.70 is: 3,341.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,187.98 : 5,780.46 = 2,420.70 : x
  2. Step 2: Convert to fraction form
    4,187.98/5,780.46 = 2,420.70/x
  3. Step 3: Cross multiply
    4,187.98x = 5,780.46 × 2,420.70
  4. Step 4: Simplify right side
    4,187.98x = 13,992,759.52
  5. Step 5: Solve for x
    x = 13,992,759.52/4,187.98
  6. Step 6: Final answer
    x = 3,341.17

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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.