Home / 2,987.60-4,476.36-1,816.88

Finding the Fourth Proportional to 2,987.60, 4,476.36 and 1,816.88

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Solution

The fourth proportional to 2,987.60, 4,476.36 and 1,816.88 is: 2,722.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,987.60 : 4,476.36 = 1,816.88 : x
  2. Step 2: Convert to fraction form
    2,987.60/4,476.36 = 1,816.88/x
  3. Step 3: Cross multiply
    2,987.60x = 4,476.36 × 1,816.88
  4. Step 4: Simplify right side
    2,987.60x = 8,133,008.96
  5. Step 5: Solve for x
    x = 8,133,008.96/2,987.60
  6. Step 6: Final answer
    x = 2,722.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.