Home / 2,130.76-3,175.61-2,127.52

Finding the Fourth Proportional to 2,130.76, 3,175.61 and 2,127.52

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Solution

The fourth proportional to 2,130.76, 3,175.61 and 2,127.52 is: 3,170.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,130.76 : 3,175.61 = 2,127.52 : x
  2. Step 2: Convert to fraction form
    2,130.76/3,175.61 = 2,127.52/x
  3. Step 3: Cross multiply
    2,130.76x = 3,175.61 × 2,127.52
  4. Step 4: Simplify right side
    2,130.76x = 6,756,173.79
  5. Step 5: Solve for x
    x = 6,756,173.79/2,130.76
  6. Step 6: Final answer
    x = 3,170.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.