Home / 4,087.08-6,131.10-1,312.80

Finding the Fourth Proportional to 4,087.08, 6,131.10 and 1,312.80

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Solution

The fourth proportional to 4,087.08, 6,131.10 and 1,312.80 is: 1,969.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,087.08 : 6,131.10 = 1,312.80 : x
  2. Step 2: Convert to fraction form
    4,087.08/6,131.10 = 1,312.80/x
  3. Step 3: Cross multiply
    4,087.08x = 6,131.10 × 1,312.80
  4. Step 4: Simplify right side
    4,087.08x = 8,048,908.08
  5. Step 5: Solve for x
    x = 8,048,908.08/4,087.08
  6. Step 6: Final answer
    x = 1,969.35

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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.