Home / 2,145.40-2,962.92-1,648.60

Finding the Fourth Proportional to 2,145.40, 2,962.92 and 1,648.60

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Solution

The fourth proportional to 2,145.40, 2,962.92 and 1,648.60 is: 2,276.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,145.40 : 2,962.92 = 1,648.60 : x
  2. Step 2: Convert to fraction form
    2,145.40/2,962.92 = 1,648.60/x
  3. Step 3: Cross multiply
    2,145.40x = 2,962.92 × 1,648.60
  4. Step 4: Simplify right side
    2,145.40x = 4,884,669.91
  5. Step 5: Solve for x
    x = 4,884,669.91/2,145.40
  6. Step 6: Final answer
    x = 2,276.81

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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.