Home / 2,165.24-2,989.40-1,666.94

Finding the Fourth Proportional to 2,165.24, 2,989.40 and 1,666.94

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Solution

The fourth proportional to 2,165.24, 2,989.40 and 1,666.94 is: 2,301.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,165.24 : 2,989.40 = 1,666.94 : x
  2. Step 2: Convert to fraction form
    2,165.24/2,989.40 = 1,666.94/x
  3. Step 3: Cross multiply
    2,165.24x = 2,989.40 × 1,666.94
  4. Step 4: Simplify right side
    2,165.24x = 4,983,150.44
  5. Step 5: Solve for x
    x = 4,983,150.44/2,165.24
  6. Step 6: Final answer
    x = 2,301.43

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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.