Home / 2,987.10-4,478.04-1,426.32

Finding the Fourth Proportional to 2,987.10, 4,478.04 and 1,426.32

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Solution

The fourth proportional to 2,987.10, 4,478.04 and 1,426.32 is: 2,138.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,987.10 : 4,478.04 = 1,426.32 : x
  2. Step 2: Convert to fraction form
    2,987.10/4,478.04 = 1,426.32/x
  3. Step 3: Cross multiply
    2,987.10x = 4,478.04 × 1,426.32
  4. Step 4: Simplify right side
    2,987.10x = 6,387,118.01
  5. Step 5: Solve for x
    x = 6,387,118.01/2,987.10
  6. Step 6: Final answer
    x = 2,138.23

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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.