Home / 2,883.72-4,321.50-1,421.40

Finding the Fourth Proportional to 2,883.72, 4,321.50 and 1,421.40

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Solution

The fourth proportional to 2,883.72, 4,321.50 and 1,421.40 is: 2,130.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,883.72 : 4,321.50 = 1,421.40 : x
  2. Step 2: Convert to fraction form
    2,883.72/4,321.50 = 1,421.40/x
  3. Step 3: Cross multiply
    2,883.72x = 4,321.50 × 1,421.40
  4. Step 4: Simplify right side
    2,883.72x = 6,142,580.10
  5. Step 5: Solve for x
    x = 6,142,580.10/2,883.72
  6. Step 6: Final answer
    x = 2,130.09

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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.