Home / 2,129.90-2,934.23-2,031.48

Finding the Fourth Proportional to 2,129.90, 2,934.23 and 2,031.48

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Solution

The fourth proportional to 2,129.90, 2,934.23 and 2,031.48 is: 2,798.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,129.90 : 2,934.23 = 2,031.48 : x
  2. Step 2: Convert to fraction form
    2,129.90/2,934.23 = 2,031.48/x
  3. Step 3: Cross multiply
    2,129.90x = 2,934.23 × 2,031.48
  4. Step 4: Simplify right side
    2,129.90x = 5,960,819.40
  5. Step 5: Solve for x
    x = 5,960,819.40/2,129.90
  6. Step 6: Final answer
    x = 2,798.64

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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.