Home / 7,111.40-10,670.30-3,213.80

Finding the Fourth Proportional to 7,111.40, 10,670.30 and 3,213.80

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Solution

The fourth proportional to 7,111.40, 10,670.30 and 3,213.80 is: 4,822.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,111.40 : 10,670.30 = 3,213.80 : x
  2. Step 2: Convert to fraction form
    7,111.40/10,670.30 = 3,213.80/x
  3. Step 3: Cross multiply
    7,111.40x = 10,670.30 × 3,213.80
  4. Step 4: Simplify right side
    7,111.40x = 34,292,210.14
  5. Step 5: Solve for x
    x = 34,292,210.14/7,111.40
  6. Step 6: Final answer
    x = 4,822.15

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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.