Home / 3,139.16-4,322.14-2,666.12

Finding the Fourth Proportional to 3,139.16, 4,322.14 and 2,666.12

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Solution

The fourth proportional to 3,139.16, 4,322.14 and 2,666.12 is: 3,670.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,139.16 : 4,322.14 = 2,666.12 : x
  2. Step 2: Convert to fraction form
    3,139.16/4,322.14 = 2,666.12/x
  3. Step 3: Cross multiply
    3,139.16x = 4,322.14 × 2,666.12
  4. Step 4: Simplify right side
    3,139.16x = 11,523,343.90
  5. Step 5: Solve for x
    x = 11,523,343.90/3,139.16
  6. Step 6: Final answer
    x = 3,670.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.