Home / 2,782.30-3,839.91-1,663.22

Finding the Fourth Proportional to 2,782.30, 3,839.91 and 1,663.22

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Solution

The fourth proportional to 2,782.30, 3,839.91 and 1,663.22 is: 2,295.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,782.30 : 3,839.91 = 1,663.22 : x
  2. Step 2: Convert to fraction form
    2,782.30/3,839.91 = 1,663.22/x
  3. Step 3: Cross multiply
    2,782.30x = 3,839.91 × 1,663.22
  4. Step 4: Simplify right side
    2,782.30x = 6,386,624.71
  5. Step 5: Solve for x
    x = 6,386,624.71/2,782.30
  6. Step 6: Final answer
    x = 2,295.45

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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.