Home / 2,780.40-4,171.52-1,741.08

Finding the Fourth Proportional to 2,780.40, 4,171.52 and 1,741.08

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Solution

The fourth proportional to 2,780.40, 4,171.52 and 1,741.08 is: 2,612.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,780.40 : 4,171.52 = 1,741.08 : x
  2. Step 2: Convert to fraction form
    2,780.40/4,171.52 = 1,741.08/x
  3. Step 3: Cross multiply
    2,780.40x = 4,171.52 × 1,741.08
  4. Step 4: Simplify right side
    2,780.40x = 7,262,950.04
  5. Step 5: Solve for x
    x = 7,262,950.04/2,780.40
  6. Step 6: Final answer
    x = 2,612.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.