Home / 5,160.06-7,120.98-3,065.40

Finding the Fourth Proportional to 5,160.06, 7,120.98 and 3,065.40

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Solution

The fourth proportional to 5,160.06, 7,120.98 and 3,065.40 is: 4,230.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,160.06 : 7,120.98 = 3,065.40 : x
  2. Step 2: Convert to fraction form
    5,160.06/7,120.98 = 3,065.40/x
  3. Step 3: Cross multiply
    5,160.06x = 7,120.98 × 3,065.40
  4. Step 4: Simplify right side
    5,160.06x = 21,828,652.09
  5. Step 5: Solve for x
    x = 21,828,652.09/5,160.06
  6. Step 6: Final answer
    x = 4,230.31

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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.