Home / 2,889.20-3,986.40-1,710.56

Finding the Fourth Proportional to 2,889.20, 3,986.40 and 1,710.56

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Solution

The fourth proportional to 2,889.20, 3,986.40 and 1,710.56 is: 2,360.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,889.20 : 3,986.40 = 1,710.56 : x
  2. Step 2: Convert to fraction form
    2,889.20/3,986.40 = 1,710.56/x
  3. Step 3: Cross multiply
    2,889.20x = 3,986.40 × 1,710.56
  4. Step 4: Simplify right side
    2,889.20x = 6,818,976.38
  5. Step 5: Solve for x
    x = 6,818,976.38/2,889.20
  6. Step 6: Final answer
    x = 2,360.16

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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.