Home / 5,180.31-7,148.93-3,085.65

Finding the Fourth Proportional to 5,180.31, 7,148.93 and 3,085.65

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Solution

The fourth proportional to 5,180.31, 7,148.93 and 3,085.65 is: 4,258.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,180.31 : 7,148.93 = 3,085.65 : x
  2. Step 2: Convert to fraction form
    5,180.31/7,148.93 = 3,085.65/x
  3. Step 3: Cross multiply
    5,180.31x = 7,148.93 × 3,085.65
  4. Step 4: Simplify right side
    5,180.31x = 22,059,080.43
  5. Step 5: Solve for x
    x = 22,059,080.43/5,180.31
  6. Step 6: Final answer
    x = 4,258.25

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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.