Home / 7,276.29-10,905.30-3,111.40

Finding the Fourth Proportional to 7,276.29, 10,905.30 and 3,111.40

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Solution

The fourth proportional to 7,276.29, 10,905.30 and 3,111.40 is: 4,663.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,276.29 : 10,905.30 = 3,111.40 : x
  2. Step 2: Convert to fraction form
    7,276.29/10,905.30 = 3,111.40/x
  3. Step 3: Cross multiply
    7,276.29x = 10,905.30 × 3,111.40
  4. Step 4: Simplify right side
    7,276.29x = 33,930,750.42
  5. Step 5: Solve for x
    x = 33,930,750.42/7,276.29
  6. Step 6: Final answer
    x = 4,663.19

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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.