Home / 3,117.40-4,670.70-2,021.20

Finding the Fourth Proportional to 3,117.40, 4,670.70 and 2,021.20

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Solution

The fourth proportional to 3,117.40, 4,670.70 and 2,021.20 is: 3,028.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,117.40 : 4,670.70 = 2,021.20 : x
  2. Step 2: Convert to fraction form
    3,117.40/4,670.70 = 2,021.20/x
  3. Step 3: Cross multiply
    3,117.40x = 4,670.70 × 2,021.20
  4. Step 4: Simplify right side
    3,117.40x = 9,440,418.84
  5. Step 5: Solve for x
    x = 9,440,418.84/3,117.40
  6. Step 6: Final answer
    x = 3,028.30

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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.