Home / 4,085.35-6,127.70-1,311.28

Finding the Fourth Proportional to 4,085.35, 6,127.70 and 1,311.28

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Solution

The fourth proportional to 4,085.35, 6,127.70 and 1,311.28 is: 1,966.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,085.35 : 6,127.70 = 1,311.28 : x
  2. Step 2: Convert to fraction form
    4,085.35/6,127.70 = 1,311.28/x
  3. Step 3: Cross multiply
    4,085.35x = 6,127.70 × 1,311.28
  4. Step 4: Simplify right side
    4,085.35x = 8,035,130.46
  5. Step 5: Solve for x
    x = 8,035,130.46/4,085.35
  6. Step 6: Final answer
    x = 1,966.82

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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.