Home / 2,782.28-3,839.91-1,587.69

Finding the Fourth Proportional to 2,782.28, 3,839.91 and 1,587.69

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Solution

The fourth proportional to 2,782.28, 3,839.91 and 1,587.69 is: 2,191.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,782.28 : 3,839.91 = 1,587.69 : x
  2. Step 2: Convert to fraction form
    2,782.28/3,839.91 = 1,587.69/x
  3. Step 3: Cross multiply
    2,782.28x = 3,839.91 × 1,587.69
  4. Step 4: Simplify right side
    2,782.28x = 6,096,586.71
  5. Step 5: Solve for x
    x = 6,096,586.71/2,782.28
  6. Step 6: Final answer
    x = 2,191.22

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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.