Home / 2,987.30-4,122.35-1,660.93

Finding the Fourth Proportional to 2,987.30, 4,122.35 and 1,660.93

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Solution

The fourth proportional to 2,987.30, 4,122.35 and 1,660.93 is: 2,292.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,987.30 : 4,122.35 = 1,660.93 : x
  2. Step 2: Convert to fraction form
    2,987.30/4,122.35 = 1,660.93/x
  3. Step 3: Cross multiply
    2,987.30x = 4,122.35 × 1,660.93
  4. Step 4: Simplify right side
    2,987.30x = 6,846,934.79
  5. Step 5: Solve for x
    x = 6,846,934.79/2,987.30
  6. Step 6: Final answer
    x = 2,292.01

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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.