Home / 2,130.70-3,196.05-1,252.30

Finding the Fourth Proportional to 2,130.70, 3,196.05 and 1,252.30

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Solution

The fourth proportional to 2,130.70, 3,196.05 and 1,252.30 is: 1,878.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,130.70 : 3,196.05 = 1,252.30 : x
  2. Step 2: Convert to fraction form
    2,130.70/3,196.05 = 1,252.30/x
  3. Step 3: Cross multiply
    2,130.70x = 3,196.05 × 1,252.30
  4. Step 4: Simplify right side
    2,130.70x = 4,002,413.42
  5. Step 5: Solve for x
    x = 4,002,413.42/2,130.70
  6. Step 6: Final answer
    x = 1,878.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.