Home / 1,660.16-2,290.94-914.15

Finding the Fourth Proportional to 1,660.16, 2,290.94 and 914.15

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Solution

The fourth proportional to 1,660.16, 2,290.94 and 914.15 is: 1,261.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,660.16 : 2,290.94 = 914.15 : x
  2. Step 2: Convert to fraction form
    1,660.16/2,290.94 = 914.15/x
  3. Step 3: Cross multiply
    1,660.16x = 2,290.94 × 914.15
  4. Step 4: Simplify right side
    1,660.16x = 2,094,262.80
  5. Step 5: Solve for x
    x = 2,094,262.80/1,660.16
  6. Step 6: Final answer
    x = 1,261.48

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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.