Home / 5,135.63-7,085.83-3,145.46

Finding the Fourth Proportional to 5,135.63, 7,085.83 and 3,145.46

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Solution

The fourth proportional to 5,135.63, 7,085.83 and 3,145.46 is: 4,339.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,135.63 : 7,085.83 = 3,145.46 : x
  2. Step 2: Convert to fraction form
    5,135.63/7,085.83 = 3,145.46/x
  3. Step 3: Cross multiply
    5,135.63x = 7,085.83 × 3,145.46
  4. Step 4: Simplify right side
    5,135.63x = 22,288,194.83
  5. Step 5: Solve for x
    x = 22,288,194.83/5,135.63
  6. Step 6: Final answer
    x = 4,339.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.