Home / 2,710.90-3,739.26-1,915.39

Finding the Fourth Proportional to 2,710.90, 3,739.26 and 1,915.39

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Solution

The fourth proportional to 2,710.90, 3,739.26 and 1,915.39 is: 2,641.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,710.90 : 3,739.26 = 1,915.39 : x
  2. Step 2: Convert to fraction form
    2,710.90/3,739.26 = 1,915.39/x
  3. Step 3: Cross multiply
    2,710.90x = 3,739.26 × 1,915.39
  4. Step 4: Simplify right side
    2,710.90x = 7,162,141.21
  5. Step 5: Solve for x
    x = 7,162,141.21/2,710.90
  6. Step 6: Final answer
    x = 2,641.98

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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.