Home / 7,111.49-10,666.84-2,181.12

Finding the Fourth Proportional to 7,111.49, 10,666.84 and 2,181.12

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Solution

The fourth proportional to 7,111.49, 10,666.84 and 2,181.12 is: 3,271.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,111.49 : 10,666.84 = 2,181.12 : x
  2. Step 2: Convert to fraction form
    7,111.49/10,666.84 = 2,181.12/x
  3. Step 3: Cross multiply
    7,111.49x = 10,666.84 × 2,181.12
  4. Step 4: Simplify right side
    7,111.49x = 23,265,593.82
  5. Step 5: Solve for x
    x = 23,265,593.82/7,111.49
  6. Step 6: Final answer
    x = 3,271.55

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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.