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Finding the Fourth Proportional to 3,330.64, 4,990.29 and 1,866.16

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Solution

The fourth proportional to 3,330.64, 4,990.29 and 1,866.16 is: 2,796.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,330.64 : 4,990.29 = 1,866.16 : x
  2. Step 2: Convert to fraction form
    3,330.64/4,990.29 = 1,866.16/x
  3. Step 3: Cross multiply
    3,330.64x = 4,990.29 × 1,866.16
  4. Step 4: Simplify right side
    3,330.64x = 9,312,679.59
  5. Step 5: Solve for x
    x = 9,312,679.59/3,330.64
  6. Step 6: Final answer
    x = 2,796.06

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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.