Home / 2,130.40-2,934.92-2,031.98

Finding the Fourth Proportional to 2,130.40, 2,934.92 and 2,031.98

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Solution

The fourth proportional to 2,130.40, 2,934.92 and 2,031.98 is: 2,799.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,130.40 : 2,934.92 = 2,031.98 : x
  2. Step 2: Convert to fraction form
    2,130.40/2,934.92 = 2,031.98/x
  3. Step 3: Cross multiply
    2,130.40x = 2,934.92 × 2,031.98
  4. Step 4: Simplify right side
    2,130.40x = 5,963,688.58
  5. Step 5: Solve for x
    x = 5,963,688.58/2,130.40
  6. Step 6: Final answer
    x = 2,799.33

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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.