Home / 2,621.50-3,615.83-1,780.74

Finding the Fourth Proportional to 2,621.50, 3,615.83 and 1,780.74

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Solution

The fourth proportional to 2,621.50, 3,615.83 and 1,780.74 is: 2,456.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,621.50 : 3,615.83 = 1,780.74 : x
  2. Step 2: Convert to fraction form
    2,621.50/3,615.83 = 1,780.74/x
  3. Step 3: Cross multiply
    2,621.50x = 3,615.83 × 1,780.74
  4. Step 4: Simplify right side
    2,621.50x = 6,438,853.11
  5. Step 5: Solve for x
    x = 6,438,853.11/2,621.50
  6. Step 6: Final answer
    x = 2,456.17

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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.