Home / 2,130.90-3,196.53-670.02

Finding the Fourth Proportional to 2,130.90, 3,196.53 and 670.02

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Solution

The fourth proportional to 2,130.90, 3,196.53 and 670.02 is: 1,005.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,130.90 : 3,196.53 = 670.02 : x
  2. Step 2: Convert to fraction form
    2,130.90/3,196.53 = 670.02/x
  3. Step 3: Cross multiply
    2,130.90x = 3,196.53 × 670.02
  4. Step 4: Simplify right side
    2,130.90x = 2,141,739.03
  5. Step 5: Solve for x
    x = 2,141,739.03/2,130.90
  6. Step 6: Final answer
    x = 1,005.09

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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.