Home / 1,660.24-2,291.18-914.20

Finding the Fourth Proportional to 1,660.24, 2,291.18 and 914.20

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Solution

The fourth proportional to 1,660.24, 2,291.18 and 914.20 is: 1,261.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,660.24 : 2,291.18 = 914.20 : x
  2. Step 2: Convert to fraction form
    1,660.24/2,291.18 = 914.20/x
  3. Step 3: Cross multiply
    1,660.24x = 2,291.18 × 914.20
  4. Step 4: Simplify right side
    1,660.24x = 2,094,596.76
  5. Step 5: Solve for x
    x = 2,094,596.76/1,660.24
  6. Step 6: Final answer
    x = 1,261.62

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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.