Home / 2,890.13-3,988.37-1,648.13

Finding the Fourth Proportional to 2,890.13, 3,988.37 and 1,648.13

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Solution

The fourth proportional to 2,890.13, 3,988.37 and 1,648.13 is: 2,274.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,890.13 : 3,988.37 = 1,648.13 : x
  2. Step 2: Convert to fraction form
    2,890.13/3,988.37 = 1,648.13/x
  3. Step 3: Cross multiply
    2,890.13x = 3,988.37 × 1,648.13
  4. Step 4: Simplify right side
    2,890.13x = 6,573,336.43
  5. Step 5: Solve for x
    x = 6,573,336.43/2,890.13
  6. Step 6: Final answer
    x = 2,274.41

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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.