Home / 1,660.30-2,291.03-914.21

Finding the Fourth Proportional to 1,660.30, 2,291.03 and 914.21

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Solution

The fourth proportional to 1,660.30, 2,291.03 and 914.21 is: 1,261.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,660.30 : 2,291.03 = 914.21 : x
  2. Step 2: Convert to fraction form
    1,660.30/2,291.03 = 914.21/x
  3. Step 3: Cross multiply
    1,660.30x = 2,291.03 × 914.21
  4. Step 4: Simplify right side
    1,660.30x = 2,094,490.12
  5. Step 5: Solve for x
    x = 2,094,490.12/1,660.30
  6. Step 6: Final answer
    x = 1,261.51

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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.