Home / 4,086.13-6,128.29-1,312.27

Finding the Fourth Proportional to 4,086.13, 6,128.29 and 1,312.27

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Solution

The fourth proportional to 4,086.13, 6,128.29 and 1,312.27 is: 1,968.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,086.13 : 6,128.29 = 1,312.27 : x
  2. Step 2: Convert to fraction form
    4,086.13/6,128.29 = 1,312.27/x
  3. Step 3: Cross multiply
    4,086.13x = 6,128.29 × 1,312.27
  4. Step 4: Simplify right side
    4,086.13x = 8,041,971.12
  5. Step 5: Solve for x
    x = 8,041,971.12/4,086.13
  6. Step 6: Final answer
    x = 1,968.11

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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.