Home / 4,087.10-6,131.10-1,313.30

Finding the Fourth Proportional to 4,087.10, 6,131.10 and 1,313.30

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Solution

The fourth proportional to 4,087.10, 6,131.10 and 1,313.30 is: 1,970.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,087.10 : 6,131.10 = 1,313.30 : x
  2. Step 2: Convert to fraction form
    4,087.10/6,131.10 = 1,313.30/x
  3. Step 3: Cross multiply
    4,087.10x = 6,131.10 × 1,313.30
  4. Step 4: Simplify right side
    4,087.10x = 8,051,973.63
  5. Step 5: Solve for x
    x = 8,051,973.63/4,087.10
  6. Step 6: Final answer
    x = 1,970.09

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1.5x scale

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.