Home / 2,740.10-3,780.08-1,620.28

Finding the Fourth Proportional to 2,740.10, 3,780.08 and 1,620.28

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Solution

The fourth proportional to 2,740.10, 3,780.08 and 1,620.28 is: 2,235.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,740.10 : 3,780.08 = 1,620.28 : x
  2. Step 2: Convert to fraction form
    2,740.10/3,780.08 = 1,620.28/x
  3. Step 3: Cross multiply
    2,740.10x = 3,780.08 × 1,620.28
  4. Step 4: Simplify right side
    2,740.10x = 6,124,788.02
  5. Step 5: Solve for x
    x = 6,124,788.02/2,740.10
  6. Step 6: Final answer
    x = 2,235.24

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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.