Home / 7,117.56-10,676.35-2,187.17

Finding the Fourth Proportional to 7,117.56, 10,676.35 and 2,187.17

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Solution

The fourth proportional to 7,117.56, 10,676.35 and 2,187.17 is: 3,280.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,117.56 : 10,676.35 = 2,187.17 : x
  2. Step 2: Convert to fraction form
    7,117.56/10,676.35 = 2,187.17/x
  3. Step 3: Cross multiply
    7,117.56x = 10,676.35 × 2,187.17
  4. Step 4: Simplify right side
    7,117.56x = 23,350,981.82
  5. Step 5: Solve for x
    x = 23,350,981.82/7,117.56
  6. Step 6: Final answer
    x = 3,280.76

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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.